0001564590-21-009427 | 10-K | XBRL Viewer

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Document and Entity Information - USD ($) $ in Billions	12 Months Ended
Document and Entity Information - USD ($) $ in Billions	Dec. 31, 2020	Feb. 12, 2021	Jun. 30, 2020
Document And Entity Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Trading Symbol	ALTR
Entity Registrant Name	ALTAIR ENGINEERING INC.
Entity Central Index Key	0001701732
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 1.6
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity File Number	001-38263
Entity Tax Identification Number	38-2591828
Entity Address, Address Line One	1820 East Big Beaver Road
Entity Address, City or Town	Troy
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48083
City Area Code	248
Local Phone Number	614-2400
Entity Incorporation, State or Country Code	DE
Document Annual Report	true
Document Transition Report	false
Title of 12(b) Security	Class A Common Stock $0.0001 par value per share
Security Exchange Name	NASDAQ
Documents Incorporated by Reference	Portions of the registrant’s Proxy Statement relating to the 2021 Annual Meeting of Stockholders, scheduled to be filed with the Securities and Exchange Commission within 120 days after the end of the registrant’s fiscal year ended December 31, 2020, are incorporated by reference into Part III of this Annual Report on Form 10-K.
Class A Common Stock [Member]
Document And Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		44,757,500
Class B Common Stock [Member]
Document And Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		29,840,732

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 241,221	$ 223,117
Accounts receivable, net	117,878	104,984
Income tax receivable	6,736	7,264
Prepaid expenses and other current assets	21,100	17,092
Total current assets	386,935	352,457
Property and equipment, net	36,332	36,297
Operating lease right of use assets	33,526	28,134
Goodwill	264,481	233,683
Other intangible assets, net	76,114	67,075
Deferred tax assets	7,125	5,791
Other long-term assets	25,389	19,708
TOTAL ASSETS	829,902	743,145
CURRENT LIABILITIES
Current portion of long-term debt	30,384	430
Accounts payable	8,594	8,585
Accrued compensation and benefits	34,772	30,676
Current portion of operating lease liabilities	10,331	9,141
Other accrued expenses and current liabilities	30,982	28,603
Deferred revenue	85,691	75,431
Total current liabilities	200,754	152,866
Long-term debt, net of current portion	188,653	178,238
Operating lease liabilities, net of current portion	24,323	20,174
Deferred revenue, non-current	9,388	8,136
Other long-term liabilities	27,414	26,672
TOTAL LIABILITIES	450,532	386,086
Commitments and contingencies
MEZZANINE EQUITY	784	2,352
STOCKHOLDERS’ EQUITY
Preferred stock ($0.0001 par value), authorized 45,000 shares, none issued or outstanding
Additional paid-in capital	474,669	446,633
Accumulated deficit	(93,293)	(82,405)
Accumulated other comprehensive loss	(2,797)	(9,528)
TOTAL STOCKHOLDERS’ EQUITY	378,586	354,707
TOTAL LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS’ EQUITY	829,902	743,145
Class A Common Stock [Member]
STOCKHOLDERS’ EQUITY
Common stock	4	4
Class B Common Stock [Member]
STOCKHOLDERS’ EQUITY
Common stock	$ 3	$ 3

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2020	Dec. 31, 2019
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	45,000,000	45,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A Common Stock [Member]
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	513,796,572	513,797,000
Common stock, shares issued	44,216,000	41,271,000
Common stock, shares outstanding	44,216,000	41,271,000
Class B Common Stock [Member]
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	41,203,428	41,203,000
Common stock, shares issued	30,111,000	31,131,000
Common stock, shares outstanding	30,111,000	31,131,000

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Total revenue	$ 469,921	$ 458,915	$ 396,379
Total cost of revenue	121,305	132,599	115,973
Gross profit	348,616	326,316	280,406
Operating expenses
Research and development	126,081	117,510	97,592
Sales and marketing	111,440	106,051	80,277
General and administrative	86,432	82,178	79,751
Amortization of intangible assets	16,376	14,442	7,739
Other operating income	(3,426)	(2,072)	(9,597)
Total operating expenses	336,903	318,109	255,762
Operating income	11,713	8,207	24,644
Interest expense	11,598	6,371	200
Other income, net	(1,917)	(1,552)	(2,580)
Income before income taxes	2,032	3,388	27,024
Income tax expense	12,532	10,930	11,489
Net (loss) income	$ (10,500)	$ (7,542)	$ 15,535
(Loss) income per share:
Net (loss) income per share attributable to common stockholders, basic	$ (0.14)	$ (0.11)	$ 0.23
Net (loss) income per share attributable to common stockholders, diluted	$ (0.14)	$ (0.11)	$ 0.21
Weighted average shares outstanding:
Weighted average number of shares used in computing net (loss) income per share, basic	73,241	71,544	67,468
Weighted average number of shares used in computing net (loss) income per share, diluted	73,241	71,544	74,878
License [Member]
Total revenue	$ 259,965	$ 244,321	$ 207,164
Total cost of revenue	19,637	21,285	16,119
Maintenance and Other Services [Member]
Total revenue	131,746	122,381	97,197
Total cost of revenue	38,688	38,401	29,655
Total Software [Member]
Total revenue	391,711	366,702	304,361
Total cost of revenue	58,325	59,686	45,774
Software Related Services [Member]
Total revenue	26,454	34,576	36,945
Total cost of revenue	21,243	25,640	26,415
Total Software and Related Services [Member]
Total revenue	418,165	401,278	341,306
Total cost of revenue	79,568	85,326	72,189
Client Engineering Services [Member]
Total revenue	44,320	48,987	47,852
Total cost of revenue	35,684	39,875	38,979
Other [Member]
Total revenue	7,436	8,650	7,221
Total cost of revenue	$ 6,053	$ 7,398	$ 4,805

Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (10,500)	$ (7,542)	$ 15,535
Other comprehensive income (loss), net of tax:
Foreign currency translation (net of tax effect of $0 for all periods)	7,782	1,895	(5,449)
Retirement related benefit plans (net of tax effect of $308, $(16) and $318, respectively)	(1,051)	(133)	(769)
Total other comprehensive income (loss)	6,731	1,762	(6,218)
Comprehensive (loss) income	$ (3,769)	$ (5,780)	$ 9,317

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

+ References

+ Details

Consolidated Statements of Comprehensive (Loss) Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Foreign currency translation, tax effect	$ 0	$ 0	$ 0
Retirement related benefit plans, tax effect	$ 308	$ (16)	$ 318

Consolidated Statement of Changes in Stockholders' Equity (Deficit) - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock Class A Common Stock [Member]	Common Stock Class B Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Deficit [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning balance at Dec. 31, 2017	$ 58,948	$ 77,744	$ 2	$ 4	$ 232,156	$ (168,142)	$ 77,744	$ (5,072)
Beginning balance (in shares) at Dec. 31, 2017			26,725	36,508
Net income (loss)	15,535					15,535
Follow-on public offering, net of offering costs of $370	135,201		$ 1	$ (1)	135,201
Follow-on public offering, net of offering costs of $370 (shares)			5,731	(1,675)
Adjustment for acquisitions	(96)				(96)
Issuance of common stock for acquisitions	8,681				8,681
Issuance of common stock for acquisitions (in shares)			145
Exercise of stock options	2,077		$ 1		2,076
Exercise of stock options (in shares)			3,086
Conversion from Class B to Class A common stock			2,662	(2,662)
Stock-based compensation	1,814				1,814
Foreign currency translation, net of tax	(5,449)							(5,449)
Retirement related benefit plans, net of tax	(769)							(769)
Ending balance at Dec. 31, 2018	293,686		$ 4	$ 3	379,832	(74,863)		(11,290)
Ending balance (in shares) at Dec. 31, 2018			38,349	32,171
Net income (loss)	(7,542)					(7,542)
Equity component of convertible senior notes, net of issuance costs	50,009				50,009
Issuance of common stock for acquisitions	7,637				7,637
Issuance of common stock for acquisitions (in shares)			250
Exercise of stock options and other	1,510				1,510
Exercise of stock options and other (in shares)			1,571
Vesting of restricted stock (in shares)			61
Conversion from Class B to Class A common stock			1,040	(1,040)
Stock-based compensation	7,645				7,645
Foreign currency translation, net of tax	1,895							1,895
Retirement related benefit plans, net of tax	(133)							(133)
Ending balance at Dec. 31, 2019	354,707	$ (388)	$ 4	$ 3	446,633	(82,405)	$ (388)	(9,528)
Ending balance (in shares) at Dec. 31, 2019			41,271	31,131
Net income (loss)	(10,500)					(10,500)
Issuance of common stock for acquisitions	3,504				3,504
Issuance of common stock for acquisitions (in shares)			230
Exercise of stock options	1,710				1,710
Exercise of stock options (in shares)			1,472
Vesting of restricted stock (in shares)			223
Conversion from Class B to Class A common stock			1,020	(1,020)
Stock-based compensation	21,254				21,254
Reclassification of mezzanine equity to permanent equity	1,568				1,568
Foreign currency translation, net of tax	7,782							7,782
Retirement related benefit plans, net of tax	(1,051)							(1,051)
Ending balance at Dec. 31, 2020	$ 378,586		$ 4	$ 3	$ 474,669	$ (93,293)		$ (2,797)
Ending balance (in shares) at Dec. 31, 2020			44,216	30,111

Consolidated Statement of Changes in Stockholders' Equity (Deficit) (Parenthetical) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)
Statement Of Stockholders Equity [Abstract]
Follow-on public offering, offering costs	$ 370

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
OPERATING ACTIVITIES:
Net (loss) income	$ (10,500)	$ (7,542)	$ 15,535
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	23,806	21,522	14,734
Provision for credit loss	1,259	671	394
Amortization of debt discount and issuance costs	10,829	5,663	23
Stock-based compensation expense	21,355	8,528	3,339
Gain on sale of assets held for sale			(4,503)
Impairment of intangible assets	0		608
Deferred income taxes	(10,350)	(950)	(1,057)
Other, net	118	6	(206)
Changes in assets and liabilities:
Accounts receivable	(11,032)	(7,901)	(1,394)
Prepaid expenses and other current assets	(2,131)	(2,396)	204
Other long-term assets	(4,527)	(2,591)	(1,660)
Accounts payable	(1,839)	(426)	1,647
Accrued compensation and benefits	1,985	(1,232)	5,678
Other accrued expenses and current liabilities	5,771	513	(6,667)
Operating lease right of use assets and liabilities, net	(142)	102
Deferred revenue	8,280	17,426	9,555
Net cash provided by operating activities	32,882	31,393	36,230
INVESTING ACTIVITIES:
Payments for acquisition of businesses, net of cash acquired	(41,028)	(25,720)	(203,438)
Capital expenditures	(6,093)	(9,660)	(6,659)
Payments for acquisition of developed technology	(2,133)	(473)	(2,727)
Proceeds from sale of assets held for sale and other			6,614
Other investing activities, net	162	14
Net cash used in investing activities	(49,092)	(35,839)	(206,210)
FINANCING ACTIVITIES:
Borrowings under revolving commitment	30,000	96,992	37,041
Proceeds from the exercise of stock options	1,710	1,510	2,077
Proceeds from issuance of convertible senior notes, net of underwriters' discounts and commissions		223,101
Payments on revolving commitment		(127,941)	(6,091)
Payments for issuance costs of convertible senior notes		(1,233)
Proceeds from issuance of Class A common stock in follow-on public offering, net of underwriters' discounts and commissions			135,572
Other financing activities	(460)	(513)	(1,069)
Net cash provided by financing activities	31,250	191,916	167,530
Effect of exchange rate changes on cash, cash equivalents and restricted cash	3,010	342	(1,443)
Net increase (decrease) in cash, cash equivalents and restricted cash	18,050	187,812	(3,893)
Cash, cash equivalents and restricted cash at beginning of year	223,497	35,685	39,578
Cash, cash equivalents and restricted cash at end of period	241,547	223,497	35,685
Supplemental disclosures of cash flow:
Interest paid	731	664	223
Income taxes paid	12,666	7,686	6,735
Supplemental disclosure of non-cash investing and financing activities:
Issuance of common stock in connection with acquisitions	3,504	7,637	8,681
Promissory notes issued and deferred payment obligations for acquisitions	1,266	497	1,729
Finance leases	118	632	895
Property and equipment in accounts payable and other current liabilities	$ 1,671	$ 259	$ 330

Description of Business

12 Months Ended

Dec. 31, 2020

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Description of Business

1. Description of business

Altair Engineering Inc. (“Altair” or the “Company”) is incorporated in the state of Delaware. The Company is a global technology company providing software and cloud solutions in the areas of simulation, high-performance computing (“HPC”), data analytics, and artificial intelligence (“AI”). Altair enables organizations across broad industry segments to compete more effectively in a connected world while creating a more sustainable future. The Company is based in Troy, Michigan.

The Company’s simulation and AI-driven approach to innovation is powered by the Company’s broad portfolio of high-fidelity and high-performance physics solvers, our market leading technology for optimization and HPC, and our end-to-end platform for developing AI and Internet of Things (“IoT”) solutions. The Company’s integrated suite of software optimizes design performance across multiple disciplines encompassing structures, motion, fluids, thermal management, electromagnetics, system modeling, and embedded systems, while also providing AI solutions and true-to-life visualization and rendering.

Altair’s software products represent a comprehensive, open architecture solution for simulation, HPC, data analytics, and AI to empower decision making for improved product design and development, manufacturing, energy management and exploration, financial services, health care, and retail operations. Altair believes its products offer a comprehensive set of technologies to design and optimize high-performance, efficient, innovative and sustainable products and processes in an increasingly connected world.

Altair also provides Client Engineering Services to support its customers with long-term ongoing product design and development expertise. This has the benefit of embedding the Company within customers, deepening its understanding of their processes, and allowing the Company to more quickly perceive trends in the overall market, helping the Company to better tailor its software products’ research and development and sales initiatives. The Company hires engineers and data scientists for placement at a customer site for specific customer-directed assignments.

Follow-on public offering

In June 2018, the Company closed its follow-on public offering (the “Offering”), in which the Company issued and sold 4,056,004 shares of Class A common stock (inclusive of 763,424 shares sold upon the exercise by the underwriters of their option to purchase additional shares of our Class A common stock). The price per share to the public was $35.00. The Company received aggregate proceeds of $135.6 million from the Offering, net of underwriters’ discounts and commissions, before deducting offering costs of approximately $0.4 million.

The Offering also included the sale of 2,307,420 shares of Class A common stock by selling stockholders, giving effect to the conversion of 1,675,420 shares of the Company’s Class B common stock into an equivalent number of shares of Class A common stock and the exercise of 257,000 options to purchase Class A common stock. The Company did not receive any proceeds from the sale of shares of Class A common stock by the selling stockholders other than the $0.5 million in proceeds from exercises of stock options by certain selling stockholders.

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2. Summary of significant accounting policies

Principles of consolidation

The accompanying consolidated financial statements have been prepared using accounting principles generally accepted in the United States of America (“GAAP”). The consolidated financial statements include the results of the Company and its controlled subsidiaries. Third-party holdings of equity interests in the Company’s subsidiaries that are less than controlled represent noncontrolling interests. Intercompany accounts and transactions have been eliminated in the consolidated financial statements.

Use of estimates

The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements, and reported amounts of revenue and expenses during the reporting periods. On an ongoing basis, management evaluates its significant estimates including the stand alone selling price, or SSP, for each distinct performance obligation included in customer contracts with multiple performance obligations, the incremental borrowing rate used in the valuation of lease liabilities, fair value of convertible senior notes, provision for doubtful accounts, tax valuation allowances, liabilities for uncertain tax provisions, impairment of goodwill and intangible assets, retirement obligations, useful lives of intangible assets, revenue for fixed price contracts, valuation of common stock, and stock-based compensation. Actual results could differ from those estimates.

Foreign currency translation

The functional currency of the Company’s foreign subsidiaries is their respective local currency. The assets and liabilities of the subsidiaries are translated to U.S. dollars at the exchange rate on the balance sheet date. Equity balances and transactions are translated using historical exchange rates. Revenues and expenses are translated at the average exchange rate during the period. Translation adjustments arising from the use of differing exchange rates from period to period are recorded as a component of accumulated other comprehensive loss within stockholders’ equity.

All assets and liabilities denominated in a currency other than the functional currency are remeasured into the functional currency with gains and losses recognized in foreign currency losses, net, in the consolidated statements of operations. The Company has no transactions which hedge purchase commitments and no intercompany balances which are designated as being of a long-term investment in nature.

Revenue recognition

Software revenue

Revenue is derived principally from the licensing of software products and from related maintenance contracts. The Company enters into contracts that include combinations of products, maintenance and services, which are accounted for as separate performance obligations with differing revenue recognition patterns.

Revenue from term-based software licenses is classified as software revenue. Term-based licenses are sold only as a bundled arrangement that includes the rights to a term-based software license and post-contract customer support (PCS), which includes unspecified technical enhancements and customer support. Maximizing the use of observable inputs, the Company determined that a majority of the estimated standalone selling prices of the term-based license is attributable to the term-based license and a minority is attributable to the PCS. The license component is classified as license revenue and recognized as revenue upon the later of delivery of the licensed product or the beginning of the license period. PCS is classified as maintenance and other services and is recognized ratably over the term of the contract, as the Company provides the PCS benefit over time as a stand ready to perform obligation.

In addition to term-based software licenses, the Company sells perpetual licenses. Software revenue is recognized upon the later of delivery of the licensed product or the beginning of the license period. Typically, the Company’s perpetual licenses are sold with PCS. The Company allocates value in bundled perpetual and PCS arrangements based on the value relationship between the software license and maintenance. Revenue from PCS is classified as maintenance and other services and is recognized ratably over the term of the contract, as the Company satisfies the PCS performance obligation over time as a stand ready to perform obligation.

Revenue from training, consulting and other services is recognized as the services are performed, and is classified as maintenance and other services in the consolidated statement of operations. For contracts in which the service consists of a single performance obligation, such as providing a training class to a customer, the Company recognizes revenue upon completion of the performance obligation. For service contracts that are longer in duration and often include multiple performance obligations (for example, point-in-time training and consulting), the Company measures the progress toward completion of the obligations and recognizes revenue accordingly. In measuring progress towards the completion of performance obligations, the Company typically utilizes output-based estimates for services with fixed fee arrangements, and estimates output based on the total tasks completed as compared to the total tasks required for each contract. Input-based estimates are utilized for services that involve general consultations with contractual billing arrangements based on time and materials, utilizing direct labor as the input measure.

The Company also executes arrangements through indirect channel partners in which the channel partners are authorized to market and distribute the Company's software products to end users of the Company's products and services in specified territories. In sales facilitated by channel partners, the channel partner bears the risk of collection from the end-user customer. The Company recognizes revenue from transactions with channel partners in a manner consistent with the direct sales described above for both perpetual and term-based licenses. Revenue from channel partner transactions is the amount remitted to the Company by the channel partners. This amount includes a fee for PCS that is compensation for providing technical enhancements and the second level of technical support to the end user, which is recognized over the period that PCS is to be provided. The Company does not offer right of return, product rotation, or price protection to any of its channel partners.

Non-income related taxes collected from customers and remitted to governmental authorities are recorded on the consolidated balance sheets as accounts receivable, net and other accrued expenses and current liabilities. These amounts are reported on a net basis in the consolidated statements of operations and do not impact reported revenues or expenses. Certain hardware revenue is included within software revenue and is recognized when all revenue recognition criteria stated above are met, which is generally when the products are delivered to end customers.

Software related services

Consulting services from product design and development projects are considered distinct performance obligations and are provided to customers on a time-and-materials (“T&M”) or fixed-price basis. The Company recognizes software services revenue for T&M contracts based upon hours worked and contractually agreed upon hourly rates using the input method. Revenue from fixed-price engagements is recognized using the output method based on the ratio of costs incurred to total estimated project costs.

Client engineering services

Client engineering services revenue are derived from professional services for staffing primarily representing engineers and data scientists located at a customer site. These professional services are considered distinct performance obligations and are provided to customers on a T&M basis. The Company recognizes this revenue for T&M contracts based upon hours worked and contractually agreed upon hourly rates using the input method.

Other

Other revenue includes product revenue from the sale of LED products primarily for the replacement of fluorescent tubes. Revenue from the sale of LED products is recognized when all revenue recognition criteria stated above are met, which is generally when the products are delivered to resellers or to end customers. Sales returns, which reduce revenue, are estimated using historical experience.

Cash, cash equivalents and restricted cash

The Company considers all highly liquid investments with original or remaining maturities of 90 days or less at the date of purchase to be cash equivalents. Cash and cash equivalents are recorded at cost, which approximates fair value. Restricted cash is included in Other long-term assets on the consolidated balance sheets. The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the consolidated balance sheets that sum to the total of the amounts reported in the consolidated statements of cash flows (in thousands):

	December 31,
	2020		2019
Cash and cash equivalents	$	241,221	$	223,117
Restricted cash included in other long-term assets		326		380
Total cash, cash equivalents, and restricted cash	$	241,547	$	223,497

Restricted cash represents amounts required for a contractual agreement with an insurer for the payment of potential health insurance claims, and term deposits for bank guarantees.

Accounts receivable, net

Accounts receivable, net consisted of the following (in thousands):

	December 31,
	2020		2019
Accounts receivable, trade	$	111,162	$	100,461
Contract assets		6,716		4,523
Accounts receivable, net	$	117,878	$	104,984

A provision for expected credit losses for groups of billed and unbilled receivables and contract assets that share similar risk characteristics is recorded based on an evaluation of historical loss experience, current conditions, and reasonable and supportable forecasts. Accounts are written off when it becomes apparent that such amounts will not be collected, generally when amounts are past due by greater than one year. Generally, the Company does not require collateral or charge interest on accounts receivable. Accounts receivable were reported net of a provision for credit loss of $2.6 million and $1.4 million at December 31, 2020 and 2019, respectively. Activity in the provision for credit loss was as follows (in thousands):

	For the Year Ended December 31,
	2020			2019			2018
Balance, beginning of year	$	(1,415	)	$	(1,150	)	$	(798	)
Adoption of ASC 326 on beginning allowance		(388	)		—			—
Provision charged to expense		(1,259	)		(671	)		(394	)
Write-offs, net of recoveries		563			413			3
Effects of foreign currency translation		(60	)		(7	)		39
Balance, end of year	$	(2,559	)	$	(1,415	)	$	(1,150	)

The change in the provision for credit loss was driven by the $0.4 million from the adoption of ASU 2016-13 and incremental losses in the current year including an immaterial impact of COVID-19 as the Company adjusted expected credit loss rates subsequent to adoption. The impact resulting from the increased credit loss rates did not have a material effect on the Company’s consolidated financial statements and is reflected in the amounts noted above.

Property and equipment, net

Property and equipment are stated at cost, less accumulated depreciation and amortization. Equipment held under capital leases are stated at the present value of minimum lease payments less accumulated amortization. Depreciation is calculated using the straight-line method over the estimated useful lives of the assets.

Expenditures for maintenance and repairs are charged to expense in the period incurred. Major expenditures for betterments are capitalized when they meet the criteria for capitalization. When assets are retired or otherwise disposed of, the cost and accumulated depreciation are removed from the accounts and any resulting gain or loss is reflected in the consolidated statements of operations in the period realized.

Building and improvements is depreciated over an estimated useful life of five to thirty-nine years. Computer equipment and software is depreciated over an estimated useful life of three to five years. Office furniture and equipment is depreciated over an estimated useful life of five to fifteen years. Leasehold improvements and assets acquired under capital leases are amortized over the lease term or the estimated useful life of the related asset or improvement, whichever is shorter.

Software development costs

Software development costs incurred prior to the establishment of technological feasibility are expensed as incurred. Technological feasibility is established upon the completion of a detailed program design. Capitalization of software development costs begins upon the establishment of technological feasibility and ends when the product is available for general release. Generally, the time between the establishment of technological feasibility and commercial release of software is short. As such, all internal software development costs have been expensed as incurred and included in research and development expense in the accompanying consolidated statements of operations.

Impairment of long-lived assets

Long-lived assets, such as property and equipment, and definite-lived intangible assets, including developed technology and customer relationships, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If circumstances require a long-lived asset or asset group to be tested for possible impairment, the Company compares the undiscounted future cash flows expected to be generated by that asset or asset group to its carrying amount. If the carrying amount of the long-lived asset or asset group is not recoverable on an undiscounted cash flow basis, an impairment charge is recognized to the extent that the carrying amount exceeds its fair value. Fair value is determined through various valuation techniques, including discounted cash flow models and third-party independent appraisals. No impairment losses were recognized in 2020, 2019, or 2018.

Goodwill and other indefinite-lived intangible assets

Goodwill represents the excess of the consideration transferred for an acquired entity over the estimated fair values of the net tangible assets and the identifiable assets acquired. As described in Note 4—Acquisitions and disposals, the Company has recorded goodwill in connection with certain acquisitions. Goodwill and other indefinite-lived intangible assets are not amortized, but rather are reviewed for impairment annually or more frequently if facts or circumstances indicate that the carrying value may not be recoverable.

The Company has determined that there is one reporting unit with goodwill subject to goodwill impairment testing. An entity has the option to perform a qualitative assessment to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount prior to performing the quantitative two-step impairment test.

The Company has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount prior to performing the quantitative two-step impairment test. The qualitative assessment evaluates various events and circumstances, such as macro-economic conditions, industry and market conditions, cost factors, relevant events and financial trends that may impact a reporting unit’s fair value. If, after assessing the totality of events or circumstances, an entity determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill, then additional impairment testing is not required. However, if an entity concludes otherwise, then it is required to perform the two-step goodwill impairment test.

The impairment test involves comparing the estimated fair value of a reporting unit with its book value, including goodwill. If the estimated fair value exceeds book value, goodwill is considered not to be impaired. If, however, the fair value of the reporting unit is less than book value, then an impairment loss is recognized in an amount equal to the amount that the book value of the reporting unit exceeds its fair value, not to exceed the total amount of goodwill allocated to the reporting unit.

The Company performs its annual impairment review of goodwill in the fourth quarter of each year and when a triggering event occurs between annual impairment dates. For 2020, the Company performed a qualitative assessment of goodwill and determined that it was not more likely than not that the fair value of its reporting unit with goodwill was less than the carrying amounts. Accordingly, the Company determined that its goodwill was not impaired.

The Company performs its annual impairment review of indefinite-lived intangibles in the fourth quarter of each year and when a triggering event occurs between annual reporting dates. In 2020, the Company performed a qualitative assessment of indefinite-lived trade names and determined there was no indication of impairment. Accordingly, no impairment charges were recognized in 2020. During the quarter ended September 30, 2018, the Company performed a test of indefinite-lived trade names. This test was triggered by the Company’s decision during the quarter to rename and rebrand certain products in the Software segment. Upon completion of the impairment test, the Company recorded an impairment charge of $0.6 million which is included in other operating income for the year ended December 31, 2018.

Receivable for R&D credit

The French government provides a research and development (“R&D”) tax credit known as Credit Impôt Recherche, or CIR, in order to encourage Companies to invest in R&D. The tax credit is deductible from the French income tax and any excess is carried forward for three years. After three years, any unused credit may be reimbursed to the Company by the French government. As of December 31, 2020, the Company had approximately $13.2 million receivables from the French government related to CIR, of which $3.2 million is recorded in income tax receivable and the remaining $10.0 million is recorded in other long-term assets. As of December 31, 2019, the Company had approximately $12.1 million receivables from the French government related to CIR, of which $2.5 million was recorded in income tax receivable and the remaining $9.6 million was recorded in other long-term assets. CIR is subject to customary audit by the French tax authorities.

Derivative financial instruments

The Company may use derivative financial instruments, primarily interest rate swap contracts or foreign currency contracts, to hedge its exposure to interest rate or foreign exchange risk. Such derivative financial instruments are initially recorded at fair value on the date on which a derivative contract is entered into and are subsequently remeasured to fair value at period end. Any gains or losses arising from changes in fair value on derivative contracts during the year are recorded in other (income) expense, net in the consolidated statement of operations. Hedge accounting has not been applied.

Income taxes

The Company accounts for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis and for operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. The Company records net deferred tax assets to the extent it believes that these assets will more likely than not be realized. These deferred tax assets are subject to periodic assessments as to recoverability and if it is determined that it is more likely than not that the benefits will not be realized, valuation allowances are recorded which increase the provision for income taxes. In making such determination, the Company considers all available positive and negative evidence, including historical taxable income, projected future taxable income, the expected timing and reversal of existing temporary differences, ability to carryback losses, and tax planning strategies. If based upon the evidence, it is more likely than not that the deferred tax asset will not be realized, a valuation allowance is recorded. A valuation allowance is recognized to reduce deferred tax assets to the amount that management believes is more likely than not to be realized.

The Company applies a more-likely-than-not recognition threshold to its accounting for tax uncertainties. The Company reviews all of its tax positions and makes determinations as to whether its tax positions are more likely than not to be sustained upon examination by the relevant taxing authorities. Only those benefits that have a greater than fifty percent likelihood of being sustained upon examination by taxing authorities are recognized. Interest and penalties related to uncertain tax positions are recorded in the provision for income taxes in the consolidated statements of operations.

Research and development costs

Research and development costs are expensed as incurred. Research and development expenses consist primarily of salaries and benefits of research and development employees and costs incurred related to the development of new software products and significant enhancements and engineering changes to existing software products.

Advertising costs

Advertising costs are expensed as incurred. Advertising expenses were $4.0 million, $4.5 million and $4.4 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Mezzanine equity

In 2017, the Company issued 200,000 shares of Class A common stock to a third party as partial consideration for the purchase of developed technology. These shares have a put right that can be exercised by the holder five years from date of purchase at $12.50 per share that requires the shares to be recorded at fair value and classified as mezzanine equity in the consolidated balance sheet. The put right option is terminated if the shareholders sell their shares. As of December 31, 2017, the Company concluded that it is no longer probable that the put option will be exercised as the put value is substantially below market value and subsequent adjustment is not required.

During the year ended December 31, 2020, the third party holder sold 133,336 shares on the open market and as a result, the issuance value of those shares was reclassified into permanent equity from mezzanine equity. The remaining 66,664 shares continue to be classified as mezzanine equity until one of the following three events take place: (1) the shares are sold on the open market; (2) a redemption feature lapses; or (3) there is a modification of the terms of the instrument.

Leases

The Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use (“ROU”) assets, current portion of operating lease liabilities, and operating lease liabilities, net of current portion on the Company’s consolidated balance sheets. Finance leases are included in property and equipment, current portion of long-term debt, and long-term

debt, net of current portion on the consolidated balance sheets. The Company did not receive any lease concessions related to COVID-19 that had a material effect on the Company’s consolidated financial statements.

Stock-based compensation

Employee stock-based awards, consisting of stock options or restricted stock units (RSUs) expected to be settled by issuing shares of Class A common stock, are recorded as equity awards. The fair value of stock options on the date of grant is measured using the Black-Scholes option pricing model. The Company expenses the grant date fair value of its time-vested stock options subject to graded vesting using the straight-line method over the applicable service period. The fair value of RSUs is measured using the fair value of the Company’s Class A common stock on the date of the grant. The fair value of RSUs is recognized as expense on a straight-line basis over the requisite service period, which is generally four years.

Business combinations

The Company accounts for business acquisitions using the acquisition method of accounting. The fair value of purchase consideration of the acquired businesses is allocated to the identifiable tangible and intangible assets acquired and liabilities assumed in the transaction based upon their estimated fair values as of the acquisition date. The excess of the purchase price over those fair values is recorded as goodwill. During the measurement period, which may be up to one year from the acquisition date. The Company may record adjustments to the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the consolidated statements of operations.

Recent accounting guidance

Accounting standards adopted

Credit Losses – In June 2016, the FASB issued ASU 2016-13, Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The ASU significantly changed how entities measure credit losses on most financial assets. The Company adopted ASU 2016-13 effective January 1, 2020 and recorded a cumulative effect adjustment to retained earnings of $0.4 million related to the adoption of ASU 2016-13; prior periods have not been adjusted.

Fair Value – In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. This ASU modifies the disclosure requirements for fair value measurements, by removing, modifying, or adding certain disclosures. The Company adopted ASU 2018-13 on January 1, 2020. The adoption of this guidance did not have a material effect on the Company’s consolidated financial statements.

Intangibles – In August 2018, the FASB issued ASU 2018-15, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract. This ASU clarifies and aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The Company adopted ASU 2018-15 on January 1, 2020, on a prospective basis. The adoption of this guidance did not have a material effect on the Company’s consolidated financial statements.

Accounting standards not yet adopted

Retirement Benefits – In August 2018, the FASB issued ASU 2018-14, Compensation – Retirement Benefits- Defined Benefit Plans – General (Subtopic 715-20): Disclosure Framework – Changes to the Disclosure Requirements for Defined Benefit Plans. This ASU modifies the disclosure requirements for defined benefit pension or other postretirement plans. The amendments are effective for fiscal years ending after December 15, 2020; early adoption is permitted. The Company is currently evaluating the impact of the new guidance on its consolidated financial statements and related disclosures and does not expect this guidance to have a material effect on its consolidated financial statements.

Income Taxes – In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This ASU simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740 and improves consistent application of GAAP for other areas of Topic 740 by clarifying and amending existing guidance. The amendments are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020; early adoption is permitted. The Company is currently evaluating the impact of the new guidance on its consolidated financial statements and related disclosures and does not expect this guidance to have a material effect on its consolidated financial statements.

Reference Rate Reform – In March 2020, the FASB issued ASU 2020-04. Reference Rate Reform (Topic 848) - Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This ASU provides optional expedients and exceptions for applying U.S.

GAAP to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another rate that is expected to be discontinued. The amendments in the guidance are optional and effective for all entities as of March 12, 2020 through December 31, 2022. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements and related disclosures and does not expect this guidance to have a material effect on its consolidated financial statements.

Debt – In August 2020, the FASB issued ASU No. 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40). This ASU simplifies the accounting for convertible instruments by eliminating certain separation models. Under ASU 2020-06, a convertible debt instrument will generally be reported as a single liability at its amortized cost with no separate accounting for embedded conversion features. The update also requires the if-converted method to be used for convertible instruments and the effect of potential share settlement be included in the diluted earnings per share calculation when an instrument may be settled in cash or shares. The amendments in this update are effective for fiscal years beginning after December 15, 2021, and interim periods within those fiscal years. The guidance allows entities to use a modified or full retrospective transition method. Early adoption is permitted, but no earlier than fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The Company is currently evaluating the timing and method of adoption and the related effect of the new guidance on its consolidated financial statements and earnings per share attributable to common stockholders.

Revenue from Contracts with Customers

12 Months Ended

Dec. 31, 2020

Revenue From Contract With Customer [Abstract]

Revenue from Contracts with Customers

3. Revenue from contracts with customers

Revenue recognition

Software revenue

Software related services revenue

Client engineering services and Other revenue

Significant judgments

Software revenue

The Company’s contracts with customers typically include promises to transfer licenses and services to a customer. Judgment is required to determine if the promises are separate performance obligations within the context of the arrangement, and if so, the allocation of the transaction price to each performance obligation. The Company’s determination of standalone selling price for performance obligations is based on the midpoint of the range of historical observable prices for goods and services sold separately. In addition, the Company estimates the standalone selling price for certain performance obligations where observable prices are not directly available, or a significant portion of historical prices are not within the range. In instances where standalone selling price was not determined based on the range of historical observable prices for goods and services sold separately, the Company used an adjusted market assessment approach to estimate the standalone selling price. In such cases the Company has considered market conditions and other observable inputs, such as internal price lists, peer data, and industry data for a similar or identical product. The Company estimates standalone selling price at contract inception considering all information that is reasonably available and is based on the amount of consideration for which the Company expects to be entitled in exchange for transferring the promised good or service to the customer. The corresponding revenues are recognized as the related performance obligations are satisfied.

The Company’s contracts do not include a significant financing component requiring adjustment to the transaction price. Payment terms vary by contract type; however, arrangements typically stipulate a requirement for the customer to pay within 30 to 60 days.

The Company rarely enters into agreements to modify previously executed contracts, which constitute contract modifications. The Company assesses each of these contract modifications to determine (i) if the additional products and services are distinct from the products and services in the original arrangement; and (ii) if the amount of consideration expected for the added products and services reflects the stand-alone selling price of those products and services, as adjusted for contract-specific circumstances. A contract modification meeting both criteria is accounted for as a separate contract. A contract modification not meeting both criteria is considered a change to the original contract and is accounted for on either (i) a prospective basis as a termination of the existing contract and the creation of a new contract; or (ii) a cumulative catch-up basis. Generally, the Company’s contract modifications meet both criteria and are accounted for as a separate contract, as adjusted for contract-specific circumstances.

Disaggregation of revenue

The Company disaggregates its software revenue by type of performance obligation and timing of revenue recognition as follows (in thousands):

	Year Ended December 31,
	2020		2019		2018
Term licenses	$	224,472	$	201,881	$	168,909
Perpetual licenses		35,493		42,440		38,255
Maintenance		117,159		103,699		86,150
Professional software services		14,587		18,682		11,047
Software related services		26,454		34,576		36,945
Client engineering services		44,320		48,987		47,852
Other		7,436		8,650		7,221
Total revenue	$	469,921	$	458,915	$	396,379

The Company derived approximately 10% of its total revenue through indirect sales channels for the years ended December 31, 2020, 2019 and 2018.

Costs to obtain a contract

The Company pays commissions for new software product and PCS sales as well as for renewals of existing software and PCS contracts. Commissions paid to obtain renewal contracts are not commensurate with the commissions paid for new product sales and therefore, a portion of the commissions paid for new contracts relate to future renewals.

The Company accounts for new product sales commissions using a portfolio approach and allocates the cost of commissions in proportion to the allocation of transaction price of license and PCS performance obligations. Commissions allocated to the license and license renewal components are expensed at the time the license revenue is recognized. Commissions allocated to PCS are capitalized and amortized on a straight-line basis over a period of four years, reflecting the Company’s estimate of the expected period that it will benefit from those commissions. As of December 31, 2020 and 2019, respectively, capitalized costs to obtain a contract were $3.7 million and $2.3 million recorded in Prepaid and other current assets and $0.6 million and $0.8 million recorded in Other long-term assets. Sales commissions were $5.0 million and $4.5 million for the years ended December 31, 2020 and 2019, respectively, and were included in sales and marketing expense in the Company’s consolidated statement of operations.

Contract assets

At December 31, 2020, contract assets were $6.7 million included in Accounts receivable, $1.4 million included in Prepaid expenses and other current assets, and $1.3 million included in Other long-term assets. At December 31, 2019, contract assets were $4.5 million included in Accounts receivable and $2.7 million included in Prepaid expenses and other current assets.

Deferred revenue

Deferred revenue consists of billings made or payments received in advance of revenue recognition from software license, PCS and professional services agreements. The timing of revenue recognition may differ from the timing of billings to customers. Payment terms vary by the type and location of customer and the products or services offered. The term between invoicing and when payment is due is not significant. The Company generally invoices its customers annually for the forthcoming year of software licenses, and more frequently for other products and services. Accordingly, the Company’s deferred revenue balance does not include revenue for future years of multiple year non-cancellable contracts that have not yet been billed.

Approximately $74.5 million of revenue was recognized during 2020 was included in the deferred revenue balances at the beginning of the year.

Revenue allocated to remaining performance obligations represents contracted revenue that has not yet been recognized, which includes deferred revenue and amounts that will be invoiced and recognized as revenue in future periods. Contracted revenue not yet recognized was $131.4 million and $113.5 million at December 31, 2020 and 2019, respectively, of which the Company expects to recognize approximately 84% and 80% of the revenue, respectively, over the next 12 months and the remainder thereafter.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

+ Details

Acquisitions and Disposals

12 Months Ended

Dec. 31, 2020

Business Combinations [Abstract]

Acquisitions and Disposals

4. Acquisitions and disposals

Univa

In September 2020, the Company acquired all of the outstanding capital stock and equity interests of Univa Corporation (“Univa”) for a preliminary base purchase price of $30.2 million, subject to certain adjustments. Univa is a leading innovator in enterprise-grade workload management, scheduling, and optimization solutions for HPC and artificial intelligence (AI) on-premises and in the cloud. Univa’s technology complements Altair’s HPC and data analytics solutions and enables the Company to further expand into life

sciences and financial services. Univa is headquartered in Chicago, with offices in Canada and Germany. The financial results of Univa have been included in the Company’s consolidated financial statements since the acquisition date.

The acquisition of Univa has been accounted for as a business combination under the acquisition method of accounting, which results in acquired assets and assumed liabilities being measured at their estimated fair value as of the acquisition date. The following table summarizes the preliminary purchase consideration transferred to acquire Univa and the amounts of identified assets acquired and liabilities assumed at the acquisition date (in thousands):

Fair value of consideration transferred	$	30,184
Recognized amounts of identifiable assets acquired and liabilities assumed:
Cash		193
Accounts receivable		956
Other assets		164
Trade names (4-year life)		200
Developed technology (6-year life)		9,000
Customer relationships (7-year life)		4,800
Accounts payable and other liabilities		(891	)
Deferred revenue		(874	)
Deferred tax liabilities		(1,100	)
Total net identifiable assets acquired and liabilities assumed		12,448
Goodwill	$	17,736

(1)	Goodwill is primarily attributable to market synergies expected to arise after the acquisition and is not deductible for tax purposes. All goodwill is recorded in the Software segment.

The preliminary estimated fair values of assets acquired and liabilities assumed, and identifiable intangible assets may be subject to change as additional information is received. The primary areas that remain preliminary relate to the fair value of intangible assets acquired, certain tangible assets and liabilities acquired, income taxes and residual goodwill. The Company expects to finalize the valuation as soon as practicable, but not later than one year from the acquisition date.

Other business acquisitions

During the year ended December 31, 2020, the Company completed other business acquisitions that were individually insignificant to the Company’s consolidated financial statements. The aggregate purchase price of these other acquisitions was $16.9 million and was allocated to assets acquired and liabilities assumed at their estimated fair values. The allocation included $6.2 million to developed technology, $2.2 million to customer relationships and $8.2 million to goodwill, and approximately $0.7 million is deductible for tax purposes. The operating results of each acquisition have been included in the consolidated financial statements since the respective dates of acquisition. All goodwill is recorded in the Software segment.

Polliwog

In October 2019, the Company entered into a stock purchase agreement and simultaneously acquired 97% of the outstanding capital stock of Polliwog Co. Ltd. (“Polliwog”), a software company based near Seoul, Korea, for aggregate consideration of $19.3 million. In October 2022, the Company will purchase the remaining three percent of Polliwog’s outstanding capital stock for aggregate consideration of $0.8 million, subject to a second stock purchase agreement. The allocation of fair value of purchase consideration was finalized in 2020, and there were no material changes to the fair value of assets acquired and liabilities assumed, as previously reported.

DEM Solutions Limited

In November 2019, the Company entered into a stock purchase agreement and simultaneously acquired 100% of the outstanding capital stock of DEM Solutions Limited (“DEM Solutions”), a company based in Edinburgh, UK, for aggregate consideration of $13.1 million. The allocation of fair value of purchase consideration was finalized in 2020, and there were no material changes to the fair value of assets acquired and liabilities assumed, as previously reported.

WEYV

In July 2019, the Company decided to sunset operations of its WEYV business, a consumer music and content service. The Company concluded that this decision was not a strategic shift that has or will have a major effect on its operations and financial results, and therefore did not meet the accounting criteria to be classified as a discontinued operation.

The operations of WEYV ceased in the third quarter of 2019. The loss on disposal was not material and is included in other operating income in the consolidated statement of operations. WEYV had a loss before income tax of $3.0 million and $4.2 million for the years ended December 31, 2019 and 2018, respectively. The WEYV business is reported in All Other within the Company’s segment information in Note 18.

Property and Equipment, Net

12 Months Ended

Dec. 31, 2020

Property Plant And Equipment [Abstract]

Property and Equipment, Net

5. Property and equipment, net

Property and equipment consisted of the following (in thousands):

	Estimated			December 31,
	useful lives			2020		2019
Land	Indefinite			$	10,067	$	9,942
Building and improvements	5-39 years				15,630		15,512
Computer equipment and software	3-5 years				41,451		37,361
Office furniture and equipment	5-15 years				10,136		8,029
Leasehold improvements		(1	)		9,652		9,014
Right of use assets under finance leases		(1	)		2,665		2,745
Total property and equipment					89,601		82,603
Less: accumulated depreciation and amortization					53,269		46,306
Property and equipment, net				$	36,332	$	36,297

(1)	Shorter of lease term or estimated useful life, generally ranging from five to ten years.

Depreciation expense, including amortization of ROU assets under finance leases, was $7.4 million, $7.1 million and $7.0 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

6. Goodwill and other intangible assets

Goodwill

The changes in the carrying amount of goodwill, which is attributable to the Software reportable segment, are as follows (in thousands):

Balance at December 31, 2018	$	210,532
Acquisitions		21,922
Effects of foreign currency translation and other		1,229
Balance at December 31, 2019		233,683
Acquisitions		25,932
Effects of foreign currency translation and other		4,866
Balance at December 31, 2020	$	264,481

Other intangible assets

A summary of other intangible assets is shown below (in thousands):

	December 31, 2020
	Weighted average amortization period	Gross carrying amount		Accumulated amortization		Net carrying amount
Definite-lived intangible assets:
Developed technology	4-6 years	$	78,841	$	37,651	$	41,190
Customer relationships	7-10 years		40,207		16,673		23,534
Other intangibles	4-10 years		344		84		260
Total definite-lived intangible assets			119,392		54,408		64,984
Indefinite-lived intangible assets:
Trade names			11,130				11,130
Total other intangible assets		$	130,522	$	54,408	$	76,114

	December 31, 2019
	Weighted average amortization period	Gross carrying amount		Accumulated amortization		Net carrying amount
Definite-lived intangible assets:
Developed technology	4-6 years	$	60,916	$	25,838	$	35,078
Customer relationships	7-10 years		32,582		11,575		21,007
Other intangibles	10 years		111		62		49
Total definite-lived intangible assets			93,609		37,475		56,134
Indefinite-lived intangible assets:
Trade names			10,941				10,941
Total other intangible assets		$	104,550	$	37,475	$	67,075

Amortization expense related to amortizing intangible assets was $16.4 million, $14.4 million and $7.7 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Estimated amortization expense for the next five years as of December 31, 2020 is as follows (in thousands):

Year ending
December 31, 2021	$	17,763
December 31, 2022		14,348
December 31, 2023		15,406
December 31, 2024		8,204
December 31, 2025		4,745
Thereafter		4,518
Total	$	64,984

Debt

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Debt

7. Debt

The carrying value of debt is as follows (in thousands):

	December 31,
	2020		2019
Convertible senior notes	$	230,000	$	230,000
Revolving credit facility		30,000		—
Obligations for finance leases		775		1,174
Total debt		260,775		231,174
Less: unamortized debt discount		37,190		46,820
Less: unamortized debt issuance costs		4,548		5,686
Less: current portion of long-term debt		30,384		430
Long-term debt, net of current portion	$	188,653	$	178,238

Convertible senior notes

In June 2019, the Company issued $230.0 million aggregate principal amount of 0.25% convertible senior notes due in 2024 (the "Convertible Notes"), which includes the underwriters’ exercise in full of their option to purchase an additional $30.0 million principal amount of the Convertible Notes, in a public offering. The net proceeds from the issuance of the Convertible Notes were $221.9 million after deducting the underwriting discounts and commissions and issuance costs.

The Company entered into a First Supplemental Indenture relating to the issuance by the Company of the Convertible Notes (the “Supplemental Indenture”) supplementing the Indenture, dated June 10, 2019 (the “Base Indenture,” and together with the Supplemental Indenture, the “Indenture”), by and between the Company and U.S. Bank National Association, as trustee (the “Trustee”). The Indenture includes customary covenants and sets forth certain events of default after which the Convertible Notes may be declared immediately due and payable and sets forth certain types of bankruptcy or insolvency events of default involving the Company after which the Convertible Notes become automatically due and payable. The Convertible Notes are senior unsecured obligations of the Company.

The Convertible Notes bear interest at a rate of 0.25% per year, payable semi-annually in arrears on June 1 and December 1 of each year, commencing December 1, 2019. The Convertible Notes will mature on June 1, 2024, unless, earlier repurchased or redeemed by the Company or converted pursuant to their terms.

The Convertible Notes have an initial conversion rate of 21.5049 shares of the Company's Class A common stock per $1,000 principal amount of Convertible Notes, which is equivalent to an initial conversion price of approximately $46.50 per share of its Class A common stock. The conversion rate will be subject to adjustment upon the occurrence of certain events specified in the Indenture but will not be adjusted for any accrued and unpaid interest. In addition, upon the occurrence of a make whole fundamental change or a redemption period (each as defined in the Indenture), the Company will, in certain circumstances, increase the conversion rate by a specified number of additional shares for a holder who elects to convert its Convertible Notes in connection with such make whole fundamental change or during the relevant redemption period.

Holders of the Convertible Notes may convert all or any portion of their Convertible Notes at any time prior to the close of business on December 1, 2023, in integral multiples of $1,000 principal amount, only under the following circumstances:

•

During any calendar quarter, if the last reported sale price of the Class A Common Stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day;

•

During the five business day period after any five consecutive trading day period (the “measurement period”) in which the trading price (as defined in the Indenture) per $1,000 principal amount of Convertible Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Class A Common Stock and the conversion rate on each such trading day;

•

If the Company calls any or all of the Convertible Notes for redemption (which the Company may not do prior to June 6, 2022), at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date; or

•

Upon the occurrence of specified corporate events.

On or after December 1, 2023 until the close of business on the business day immediately preceding the maturity date, holders may convert their Convertible Notes at any time, regardless of the foregoing circumstances. Upon conversion, the Company may satisfy its conversion obligation by paying and/or delivering, as the case may be, cash, shares of Class A Common Stock or a combination of cash and shares of the Class A Common Stock, at the Company’s election, in the manner and subject to the terms and conditions provided in the Indenture. The Company intends to settle the principal amount of the Convertible Notes in cash and the conversion spread in shares.

During the quarter ended December 31, 2020, the conditions allowing holders of the Convertible Notes to convert were not met. Therefore, the Convertible Notes were classified as long-term debt on the consolidated balance sheet as of December 31, 2020.

As of December 31, 2020, the “if-converted value” exceeded the principal amount of the Convertible Notes by $57.8 million.

The Company accounts for the Convertible Notes as separate liability and equity components. The carrying amount of the liability component of the Convertible Notes was calculated by measuring the fair value of similar debt instruments that did not have an associated convertible feature. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the par value of the Convertible Notes. The excess of the principal amount of the liability component over its carrying amount, or the debt discount, is amortized to interest expense over the term of the Convertible Notes using the effective interest method. The $51.8 million difference between the gross proceeds received from issuance of the Convertible Notes of $230.0 million and the estimated fair value of the liability component of $178.2 million, represents the equity component that was recorded in additional paid-in capital. The equity component is not remeasured as long as it continues to meet the conditions for equity classification.

The Company allocated issuance costs related to the issuance of the Convertible Notes to the liability and equity components using the same proportions as the initial carrying value of the Convertible Notes. Issuance costs attributable to the liability component are being amortized to interest expense using the effective interest method over the term of the Convertible Notes. Issuance costs attributable to the equity component are included with the equity component in stockholders’ equity.

The net carrying value of the liability component of the Convertible Notes was as follows (in thousands):

	December 31,
	2020		2019
Principal	$	230,000	$	230,000
Less: unamortized debt discount		37,190		46,820
Less: unamortized debt issuance costs		4,510		5,686
Net carrying amount	$	188,300	$	177,494

The net carrying value of the equity component of the Convertible Notes was $50.0 million at December 31, 2020 and 2019.

The interest expense related to the Convertible Notes was as follows (in thousands):

	For the Year Ended December 31,
	2020		2019
Contractual interest expense	$	575	$	313
Amortization of debt issuance cost and discount		10,806		5,635
Total	$	11,381	$	5,948

Credit agreement

Revolving credit facility

The Company has a $150.0 million credit agreement that was amended on June 5, 2019, to permit the issuance of the Convertible Notes and extend the maturity date of the credit facility to December 15, 2023 (“2019 Amended Credit Agreement”). The 2019 Amended Credit Agreement provides for an accordion feature that allows the Company to expand the size of the revolving line of credit by an additional $50.0 million, subject to certain conditions, by obtaining additional commitments from the existing lenders or by causing a person acceptable to the administrative agent to become a lender (in each case subject to the terms and conditions set forth in the 2019 Amended Credit Agreement).

As of December 31, 2020, the Company had $30.0 million of outstanding borrowings under the 2019 Amended Credit Agreement and there was $120.0 million available for future borrowing at that time. In January 2021, the Company repaid the $30.0 million borrowing outstanding at December 31, 2020. The 2019 Amended Credit Agreement is available for general corporate purposes, including working capital, capital expenditures, and permitted acquisitions.

Borrowings under the 2019 Amended Credit Agreement bear interest at a rate per annum equal to an agreed upon applicable margin plus, at the Company’s option, either the Alternate Base Rate (defined as the greatest of (1) the Prime Rate (as defined in the 2019 Amended Credit Agreement) in effect on such day, (2) the Federal Funds Effective Rate (as defined in the 2019 Amended Credit Agreement) in effect on such day plus 1/2 of 1.00% or (3) the Adjusted LIBO Rate (as defined in the 2019 Amended Credit Agreement) for a one month interest period on such day (or if such day is not a business day, the immediately preceding business day) plus 1.00%) or the Adjusted LIBO Rate. The applicable margin for borrowings under the 2019 Amended Credit Agreement is based on the Company’s most recently tested consolidated total net leverage ratio and will vary from (a) in the case of Eurodollar loans, 1.25% to 2.00%, and (b) in the case of ABR loans or swingline loans, 0.25% to 1.00%. The Company pays a commitment fee ranging from 0.15% to 0.30% on the unused portion of the 2019 Amended Credit Agreement. The weighted average interest rate on borrowings under the 2019 Amended Credit Agreement was 1.5% for the year ended December 31, 2020.

Collateral and guarantees

The 2019 Amended Credit Agreement is secured by collateral including (i) substantially all of the Company’s properties and assets, and the properties and assets of the Company’s domestic subsidiaries but excluding any patents, copyrights, patent applications or copyright applications or any trade secrets or software products and (ii) pledges of the equity interests in all present and future domestic subsidiaries (subject to certain exceptions as provided for under the 2019 Amended Credit Agreement). The Company’s direct and indirect domestic subsidiaries are guarantors of all the obligations under the 2019 Amended Credit Agreement.

Debt covenants

The 2019 Amended Credit Agreement requires the Company to maintain the following financial covenants:

•

Maximum Net Leverage Ratio : On the last day of each fiscal quarter, the Company on a consolidated basis will not permit the ratio of total indebtedness (net of unrestricted domestic cash in excess of $20.0 million) to EBITDA, as such terms are defined in the 2019 Amended Credit Agreement, for the rolling four quarter period ending on such date to be greater than 5.00 to 1.00 as of the last day of each fiscal quarter.

•

Senior Secured Leverage Ratio : On the last day of each fiscal quarter, the Company on a consolidated basis will not permit the ratio of total indebtedness secured by a lien (net of unrestricted domestic cash in excess of $20.0 million) to EBITDA, as such terms are defined in the 2019 Amended Credit Agreement, for the rolling four quarter period ending on such date to be greater than 3.00 to 1.00 as of the last day of each fiscal quarter.

•

Consolidated Interest Coverage Ratio : On the last day of each fiscal quarter, the Company on a consolidated basis will not permit the ratio of (x) EBITDA to (y) cash Consolidated Interest Expense, as such terms are defined in the 2019 Amended Credit Agreement, in each case for the rolling four quarter period ending on such date, to be less than 3.00 to 1.00 as of the last day of each fiscal quarter.

At December 31, 2020, the Company was in compliance with all of the above financial covenants.

Other

The Company has available overdraft and line of credit facilities in several countries in which it operates. These credit facilities are with various domestic and international banks and are at quoted market rates. At December 31, 2020 and 2019, the Company had $3.6 million and $3.5 million, respectively, of availability under these facilities and there were no outstanding commitments.

Leases

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Leases

8. Leases

The Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease assets and operating lease obligations on the Company’s consolidated balance sheets. Finance leases are included in property and equipment, current portion of long-term debt, and long-term debt on the consolidated balance sheets.

ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments under the lease. Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. At commencement date, the ROU asset also includes adjustments for lease prepayments, lease incentives received and the lessee's initial direct costs, if applicable. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The incremental borrowing rates are determined using rates specific to the term of the lease, economic environments where lease activity is concentrated, value of lease portfolio, and assuming full collateralization of the loans. Subsequent to the commencement date, the operating ROU asset is equal to the remeasured lease liability adjusted for cumulative prepaid or accrued rent if the lease payments are uneven throughout the lease term, unamortized lease incentives, unamortized initial direct costs and any impairment of the ROU assets. The lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease cost for minimum lease payments is recognized on a straight-line basis over the lease term.

The Company does not recognize a lease liability or ROU asset for short-term leases (leases with a term of twelve months or less). For contracts with lease and non-lease components, the Company does not allocate the contract consideration, and accounts for the lease and non-lease components as a single lease component.

The Company’s operating leases consist of office facilities, office equipment and cars and the Company’s finance leases consist of office equipment and cars. The Company’s leases have remaining terms of less than one year to 8.7 years, some of which include one or more options to renew, with renewal terms up to six years and some of which include options to terminate the leases within the next three years.

The components of lease cost were as follows (in thousands):

	For the Year Ended December 31,
	2020		2019
Operating lease cost	$	13,412	$	13,287

Finance lease cost:
Amortization of ROU assets	$	634	$	525
Interest on lease liabilities		32	21
Total finance lease cost	$	666	$	546

Operating lease cost includes short-term leases and variable lease costs, which are immaterial. Rent cost related to operating leases for office facilities was $12.1 million, $11.8 million and $11.0 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Supplemental balance sheet information related to lease liabilities was as follows:

	December 31,
(in thousands, except lease term and discount rate)	2020			2019
Operating leases:
Operating lease ROU assets	$	33,526		$	28,134

Current portion of operating lease liabilities	$	10,331		$	9,141
Operating lease liabilities, net of current portion		24,323			20,174
Total operating lease liabilities	$	34,654		$	29,315

Weighted average remaining lease term	4.2			4.2
Weighted average discount rate		4.7	%		5.6	%

Finance leases:
Property and equipment	$	2,665		$	2,745
Accumulated depreciation		(1,797	)		(1,447	)
Property and equipment, net	$	868		$	1,298

Current portion of long-term debt	$	422		$	430
Long-term debt, net of current portion		353			744
Total finance lease liabilities	$	775		$	1,174

Weighted average remaining lease term		2.1			2.7
Weighted average discount rate		3.1	%		3.5	%

Supplemental cash flow information related to leases was as follows (in thousands):

	For the Year Ended December 31,
	2020			2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	(11,875	)	$	(11,355	)
Operating cash flows from finance leases	$	(32	)	$	(46	)
Financing cash flows from finance leases	$	(456	)	$	(438	)

ROU assets obtained in exchange for lease obligations:
Operating leases	$	11,713		$	11,251
Finance leases	$	118		$	632

Maturities of operating lease liabilities at December 31, 2020, were as follows (in thousands):

Year ending December 31,
2021	$	11,704
2022		9,408
2023		6,900
2024		4,178
2025		2,786
Thereafter		3,203
Total lease payments		38,179
Less: imputed interest		3,525
Total operating lease liabilities	$	34,654

Other Liabilities

12 Months Ended

Dec. 31, 2020

Other Liabilities Disclosure [Abstract]

Other Liabilities

9. Other liabilities

The following table provides the details of other accrued expenses and current liabilities (in thousands):

	December 31,
	2020		2019
Income taxes payable	$	7,250	$	6,008
Accrued VAT		6,604		5,312
Accrued professional fees		3,156		2,581
Accrued royalties		2,009		2,314
Obligations for acquisition of businesses		1,957		1,362
Defined contribution plan liabilities		1,660		1,593
Non-income tax liabilities		1,366		1,253
Billings in excess of cost		1,108		879
Other current liabilities		5,872		7,301
Total	$	30,982	$	28,603

The following table provides the details of other long-term liabilities (in thousands):

	December 31,
	2020		2019
Pension and other post retirement liabilities	$	14,497	$	10,379
Deferred tax liabilities		8,028		6,275
Other liabilities		4,889		10,018
Total	$	27,414	$	26,672

Fair Value Measurements

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Fair Value Measurements

10. Fair value measurements

The accounting guidance for fair value, among other things, defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or nonrecurring basis. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the reporting date. The framework for measuring fair value consists of a three-level valuation hierarchy that prioritizes the inputs to valuation techniques used to measure fair value based upon whether such inputs are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect market assumptions made by the reporting entity. The three-level hierarchy for the inputs to valuation techniques is briefly summarized as follows:


Level 1—	Quoted prices in active markets for identical assets and liabilities at the measurement date;

Level 2—	Observable inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and

Level 3—	Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

An asset’s or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques used need to maximize the use of observable inputs and minimize the use of unobservable inputs.

The carrying value of cash and cash equivalents, accounts receivable and accounts payable approximate fair value due to their short maturities. Interest on the Company’s line of credit is at a variable rate, and as such the debt obligation outstanding approximates fair value.

The carrying value of the Company’s Convertible Notes are at face value less unamortized debt discount and issuance costs. The estimated fair values of the Convertible Notes, which the Company has classified as Level 2 financial instruments, were determined based on quoted bid prices of the Convertible Notes on the last trading day of each reporting period. At December 31, 2020, the fair value of the Convertible Notes was $316.3 million and is presented for required disclosure purposes only. For further information on the Convertible Notes see Note 7.

The Company is exposed to certain financial market risks related to its ongoing business operations. The Company can manage foreign currency exchange rate risk and interest rate risk through derivative financial instruments and hedging activities. Derivative financial instruments and hedging activities can be utilized to protect the Company’s cash flow from adverse movements in foreign currency exchange rates and to manage interest costs. Although the Company is exposed to credit loss in the event of nonperformance by the counterparty to the derivative financial instruments, the Company attempts to limit this exposure by entering into agreements directly with major financial institutions that meet the Company’s credit standards and that are expected to fully satisfy their obligations under the contracts. The Company had no foreign exchange contracts or derivative financial instruments at December 31, 2020 or 2019.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Stockholders' Equity

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Stockholders' Equity

11. Stockholders’ equity

Preferred stock

As of December 31, 2020, the Company had authorized 45,000,000 shares of preferred stock, par value $0.0001, of which no shares were issued or outstanding. The Board of Directors has the authority to issue the preferred stock in one or more series and to fix rights, preferences, privileges, and restrictions, including dividends and the number of shares constituting any series or the designation of such series, without any further vote or action by the stockholders.

Common stock

As of December 31, 2020, the Company had authorized 513,796,572 shares of Class A common stock, par value $0.0001, and 41,203,428 shares of Class B common stock, par value $0.0001. The rights of the holders of Class A common stock and Class B common stock are identical, except with respect to voting and conversion rights. Each share of Class A common stock is entitled to one vote per share. Each share of Class B common stock is entitled to ten votes per share and is convertible into one share of Class A common stock.

The holders of Class A and Class B common stock are entitled to dividends at the sole discretion of the Board of Directors. No common stock dividends were declared or paid in 2020, 2019, or 2018.

Stock-Based Compensation

12 Months Ended

Dec. 31, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation

12. Stock-based compensation

2001 stock-based compensation plans

Nonqualified stock option plan

In 2001, the Company established the Nonqualified Stock Option Plan (“NSO Plan”) under which 2,533,931 stock options with an exercise price of $.000025 remain outstanding at December 31, 2020. The NSO Plan was terminated in 2003. Stock options under the NSO plan were immediately vested and have a contractual term of 35 years from the date of grant. The outstanding awards will continue to be governed by their existing terms under the NSO Plan. The NSO Plan is accounted for as an equity plan.

The following table summarizes the stock option activity under the NSO Plan:

	Number of options			Weighted average exercise price per share		Weighted average remaining contractual term (years)		Aggregate intrinsic value (in millions)
Outstanding at January 1, 2020		3,557,436		$	0.000025		17.0	$	127.8
Exercised		(1,023,505	)	$	0.000025
Forfeited		—		$	—
Outstanding and exercisable at December 31, 2020		2,533,931		$	0.000025		16.0	$	147.4

The total intrinsic value of the NSO Plan stock options exercised during the years ended December 31, 2020, 2019 and 2018, was $43.1 million, $28.8 million and $68.4 million, respectively.

Incentive and nonqualified stock-based plan

Also, in 2001, the Company established the Incentive and Nonqualified Stock-based Plan (“ISO Plan”) which was terminated in 2011 and was authorized to issue nonqualified stock options (“NQSO”) and incentive stock options (“ISO”) totaling 11,153,872 shares of Class A common stock. The NQSO grants could be issued at less than the fair market value at date of grant under the terms of the ISO Plan, while ISO grants were issued at a price equal to or greater than the fair market value at date of grant. Options generally vest over a two to three-year period. All options have a contractual term of ten years from the date of grant.

The following table summarizes the stock option activity under the 2001 Stock-based compensation plans for the periods indicated as follows:

	Number of options			Weighted average exercise price per share		Weighted average remaining contractual term (years)		Aggregate intrinsic value (in millions)
Outstanding at January 1, 2020		103,000		$	0.64		1.0	$	3.6
Exercised		(103,000	)	$	0.64
Forfeited		—		$	—
Outstanding and exercisable at December 31, 2020		—		$	—		—		—

The total intrinsic value of the ISO Plan stock options exercised during the years ended December 31, 2020, 2019 and 2018, was $3.8 million, $14.4 million, and $5.2 million, respectively.

2012 stock-based compensation plans

During 2012, the Company established the 2012 Incentive and Nonqualified Stock Option Plan (“2012 Plan”) which permits the issuance of 5,200,000 shares of Class A common stock for the grant of nonqualified stock options (“NQSO”) and incentive stock options (“ISO”) for management, other employees, and board members of the Company. The options are issued at a price equal to or greater than fair market value at date of grant. All options have a contractual term of 10 years from date of grant.

The 2012 Plan is accounted for as an equity plan. For those options expected to vest, compensation expense is recognized on a straight-line basis over a four-year period, the total requisite service period of the awards. Total compensation cost related to nonvested awards not yet recognized as of December 31, 2020, was $0.1 million and is expected to be recognized over a weighted average period of 0.4 years.

The following table summarizes the stock option activity under the 2012 Plan for the periods indicated as follows:

	Number of options			Weighted average exercise price per share		Weighted average remaining contractual term (years)		Aggregate intrinsic value (in millions)
Outstanding at January 1, 2020		1,183,817		$	4.23		6.1
Granted		—		$	—
Exercised		(351,165	)	$	4.18
Forfeited		(8,000	)	$	4.31
Outstanding at December 31, 2020		824,652		$	4.26		5.1
Exercisable at December 31, 2020		691,362		$	4.08		4.8	$	37.4

The total intrinsic value of the 2012 Plan stock options exercised during the years ended December 31, 2020, 2019, and 2018, was $13.9 million, $11.2 million and $18.0 million, respectively.

2017 stock-based compensation plan

In 2017, the Company’s board of directors adopted the 2017 Equity Incentive Plan (“2017 Plan”), which was approved by the Company’s stockholders. The 2017 Plan provides for the grant of incentive stock options to the Company’s employees and any parent and subsidiary corporations’ employees, and for the grant of nonstatutory stock options, stock appreciation rights, restricted stock, restricted stock units, performance units, performance shares, other cash-based and stock-based awards to the Company’s employees, directors and consultants and the Company’s parent, subsidiary, and affiliate corporations’ employees and consultants. The 2017 Plan has 10,277,034 authorized shares of the Company’s Class A common stock reserved for issuance.

The following table summarizes the restricted stock units, or RSUs, awarded under the 2017 Plan for the period:

	Number of RSUs
Outstanding at January 1, 2020		781,301
Granted		641,723
Vested		(222,716	)
Forfeited		(45,372	)
Outstanding at December 31, 2020		1,154,936

The following table summarizes the stock option activity under the 2017 Plan for the period:

	Number of options			Weighted average exercise price per share		Weighted average remaining contractual term (years)		Aggregate intrinsic value (in millions)
Outstanding at January 1, 2020		20,000		$	38.11		9.2
Granted		4,209,454		$	45.68
Exercised		(5,000	)	$	38.11
Forfeited		(20,972	)	$	40.80
Outstanding at December 31, 2020		4,203,482		$	45.68		9.7
Exercisable at December 31, 2020		158		$	29.22		0.2

The weighted average grant date fair value of the RSUs was $32.22 and the RSUs generally vest in four equal annual installments. The fair value of RSUs that vested during the year ended December 31, 2020, was $6.7 million. Total compensation cost related to nonvested awards not yet recognized as of December 31, 2020, was $90.9 million, and is expected to be recognized over a weighted average period of 2.7 years.

Fair value of equity awards

The Company measures the fair value of its stock options on the date of grant using the Black-Scholes option pricing model. This valuation model requires the Company to make certain estimates and assumptions, including assumptions related to the expected price volatility of the Company’s stock, the period under which the options will be outstanding, the rate of return on risk-free investments, and the expected dividend yield for the Company’s stock.

The fair values of the Company’s stock options granted during the year ended December 31, 2020 and 2019, were estimated using the following assumptions:

	2020 grants			2019 grants
Weighted average grant date fair value per share	$29.22 - 57.72			$	38.11
Expected volatility	34 - 35%				42	%
Expected term (in years)		6.25			6.25
Risk-free interest rate	0.46 - 0.6%				1.80	%
Expected dividend yield		0	%		0	%

These assumptions and estimates are as follows:

•

Fair Value of Common Stock. The Company used the publicly quoted price as reported on the Nasdaq Global Select Market as the fair value of its common stock.

•

Expected Term. The Company used the simplified method to determine the expected term.

•

Risk-Free Interest Rate. The Company based the risk-free interest rate on U.S. Treasury zero-coupon yield curves with a remaining term equal to the expected term of the option.

•

Expected Volatility. As the Company does not have an extensive trading history for its common stock, the expected volatility was derived using the historical volatility of the returns of comparable publicly traded companies combined with the brief trading history of the Company’s common stock.

The Company did not grant any stock options during the year ended December 31, 2018.

Other

In connection with the acquisition of Polliwog, per the Stock Purchase Agreement, 256,594 shares of the Company’s Class A Common Stock will be issued to existing employees, subject to continuing employment. The shares will be issued on the one-, two- and three-year anniversaries of the closing, subject to potential reduction in certain circumstances. The accounting treatment for these shares in the context of the business combination is to recognize the expense as a post-combination expense, not as transaction consideration.

The estimated post combination expense to the Company as a result of the business combination was approximately $8.7 million which is recognized on a straight-line basis over the employment period that was stipulated in the Stock Purchase Agreement. As of December 31, 2020, the weighted average remaining service period is 1.8 years. Once the vesting conditions of the service period are met, the Company will issue shares for each award. Stock-based compensation expense includes $2.9 million and $0.7 million expense related to these shares for the years ended December 31, 2020 and 2019, respectively.

Stock-based compensation expense

The stock-based compensation expense was recorded as follows (in thousands):

	Year ended December 31,
	2020		2019		2018
Cost of revenue-software	$	2,473	$	1,069	$	31
Research and development		8,372		2,917		740
Sales and marketing		6,423		2,250		910
General and administrative		4,087		2,292		1,658
Total stock-based compensation expense	$	21,355	$	8,528	$	3,339

Income Taxes

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Income Taxes

13. Income taxes

The components of income (loss) before income taxes are as follows (in thousands):

	Year ended December 31,
	2020			2019			2018
U.S.	$	(22,127	)	$	(14,732	)	$	4,228
Non-U.S.		24,159			18,120			22,796
	$	2,032		$	3,388		$	27,024

The significant components of the income tax expense are as follows (in thousands):

	Year ended December 31,
	2020			2019			2018
Current
U.S. Federal	$	—		$	—		$	2
Non-U.S.		23,197			11,434			12,629
U.S. State and Local		(315	)		446			(16	)
Total current		22,882			11,880			12,615
Deferred
U.S. Federal		(881	)		193			1,714
Non-U.S.		(9,849	)		(1,143	)		(2,823	)
U.S. State and Local		380			—			(17	)
Total deferred		(10,350	)		(950	)		(1,126	)
Income tax expense	$	12,532		$	10,930		$	11,489

The reconciliation of income taxes calculated at the U.S. Federal statutory income tax rate to income tax expense is as follows (in thousands):

	Year ended December 31,
	2020			2019			2018
U.S. federal statutory rate		21	%		21	%		21	%
Income taxes at U.S. federal statutory rate	$	427		$	711		$	5,675
Foreign income taxes at rates other than the federal statutory rate		1,161			1,247			2,179
U.S. state and local income taxes, net of U.S. federal tax benefit		(4,892	)		(6,836	)		(3,453	)
U.S. effect of changes in tax laws		4,946			—			—
U.S. effect of foreign operations		1,205			8,609			—
Change in valuation allowance		5,215			18,138			21,544
Foreign withholding taxes		6,691			5,975			5,103
U.S. foreign tax credit and deduction		(1,308	)		(7,059	)		(5,648	)
Research and development tax credit		2,576			(2,600	)		(2,819	)
Stock-based compensation		(5,001	)		(4,574	)		(14,964	)
Meals & entertainment		77			246			181
Other		640			(1,068	)		1,206
Uncertain tax positions		720			(1,859	)		903
Acquisition costs		75			—			503
Tax law changes		—			—			1,079
Income tax expense	$	12,532		$	10,930		$	11,489

The Tax Act subjects a U.S. shareholder to current tax on global intangible low-taxed income (“GILTI”) earned by certain foreign subsidiaries. The impact of GILTI resulted in no incremental tax expense for the year ended December 31, 2020 due to a full valuation allowance on U.S. net deferred tax assets. In addition, the Company has made an accounting policy election to treat taxes due under the GILTI provision as a current period expense. On July 23, 2020, the Department of Treasury published final regulations under the GILTI and Subpart F provisions of the Code regarding the treatment of income that is subject to a high rate of foreign tax (“high-tax exclusion”). These regulations, among other things, permit U.S. shareholders of foreign corporations to make an election for a controlled foreign corporation to exclude from subpart F income any item of income received by the controlled foreign corporation if that income is subject to an effective tax rate greater than 90% of the maximum U.S. corporate income tax rate of 21%. The Company has evaluated the impact of these regulations and made an election to avail the high-tax exclusion for tax years 2018 and 2019. Since this is an annual election, the Company intends to make a high-tax exclusion election for 2020 tax year and has recorded the impact of the election in its 2020 year-end tax provision.

The Tax Cuts and Jobs Act, or the Tax Act, was enacted on December 22, 2017. The Tax Act reduced the U.S. federal corporate income tax rate from 35% to 21%, required companies to pay a one-time transition tax on earnings of certain foreign subsidiaries that were previously tax deferred and created new taxes on certain foreign sourced earnings. The Company applied the guidance in Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cut and Jobs Act when accounting for the enactment-date effects of the Tax Act. At December 31, 2018, the Company had completed its accounting for the tax effects of the Tax Act; the Company did not record any adjustments to the provisional amounts recorded at December 31, 2017 related to the remeasurement of its deferred balances. At December 31, 2017, the Company originally recorded a provisional amount for its one-time transition tax of $4.2 million, which was substantially offset by available foreign tax credits. During the year ended December 31, 2018, the Company revised its estimate of the provisional amount of the one-time transition tax. Upon further analyses of certain aspects of the Tax Act and refinement of its calculations, the Company increased its provisional amount of transition tax by approximately $0.6 million for the year ended December 31, 2018. This resulted in no change to income tax expense due to the impact of foreign tax credits.

Deferred income tax assets and liabilities result from differences in the basis of assets and liabilities for tax and financial statements purposes. The approximate tax effect of each type of temporary difference, and operating losses and tax credit carryforwards that give rise to a significant portion of the deferred tax assets and liabilities are as follows (in thousands):

	December 31,
	2020			2019
Deferred tax assets:
Deferred revenue	$	12,135		$	11,408
Net operating loss carryforwards		66,160			38,745
Tax credit carryforwards		26,299			38,981
Stock-based compensation		3,766			6,480
Capitalized research and development		6,472			7,162
Lease obligation		9,956			7,579
Employee benefits		5,980			5,189
Other		2,618			1,968
Total gross deferred tax assets		133,386			117,512
Less: valuation allowances		(96,831	)		(84,356	)
Net deferred tax assets⁽¹⁾		36,555			33,156
Deferred tax liabilities:
Prepaid royalties		584			—
Property and equipment and intangibles		16,177			13,588
Deferred tax on investment in subsidiary		790			474
Lease right of use asset		9,610			7,247
Convertible debt, net of issuance costs		8,685			10,899
Other		1,612			1,432
Total deferred tax liabilities		37,458			33,640
Total net deferred tax (liabilities) assets	$	(903	)	$	(484	)

(1)	Reflects gross amount before jurisdictional netting of deferred tax assets and liabilities.

Deferred tax assets and liabilities are determined separately for each tax jurisdiction on a separate or on a consolidated tax filing basis, as applicable, in which the Company conducts its operations or otherwise incurs taxable income or losses. A valuation allowance is recorded when it is more likely than not that some portion or all of the gross deferred tax assets will not be realized. The realization of deferred tax assets depends on the ability to generate sufficient taxable income of the appropriate character within the carryback or carryforward periods provided for in the tax law for each applicable tax jurisdiction. The Company considers the following possible sources of taxable income when assessing the realization of deferred tax assets:

•

taxable income in prior carryback years;

•

future reversals of existing taxable temporary differences;

•

future taxable income exclusive of reversing temporary differences and carryforwards; and

•

prudent and feasible tax planning strategies that the Company would be willing to undertake to prevent a deferred tax asset from otherwise expiring.

The assessment regarding whether a valuation allowance is required or whether a change in judgment regarding the valuation allowance has occurred also considers all available positive and negative evidence, including but not limited to:

•

nature, frequency, and severity of cumulative losses in recent years;

•

duration of statutory carryforward and carryback periods;

•

statutory limitations against utilization of tax attribute carryforwards against taxable income;

•

historical experience with tax attributes expiring unused; and

•

near‑ and medium‑term financial outlook.

The weight given to the positive and negative evidence is commensurate with the extent to which the evidence may be objectively verified. Accordingly, it is generally difficult to conclude a valuation allowance is not required when there is significant objective and verifiable negative evidence, such as cumulative losses in recent years. The Company uses the actual results for the last two years and current year results as the primary measure of cumulative losses in recent years.

The evaluation of deferred tax assets requires judgment in assessing the likely future tax consequences of events recognized in the financial statements or tax returns and future profitability. The recognition of deferred tax assets represents the Company’s best estimate of those future events. Changes in the current estimates, due to unanticipated events or otherwise, could have a material effect on the Company’s results of operations and financial condition.

In certain tax jurisdictions, the Company’s analysis indicates that it has cumulative losses in recent years. This is considered significant negative evidence, which is objective and verifiable and, therefore, difficult to overcome. However, the cumulative loss position is not solely determinative and, accordingly, the Company considers all other available positive and negative evidence in its analysis. Based on its analysis, the Company has recorded a valuation allowance for the portion of deferred tax assets where based on the weight of available evidence it is unlikely to realize those deferred tax assets.

Based on the evidence available including a lack of sustainable earnings, the Company in its judgment previously recorded a valuation allowance against substantially all of its net deferred tax assets in the United States. If a change in judgment regarding this valuation allowance were to occur in the future, the Company will record a potentially material deferred tax benefit, which could result in a favorable impact on the effective tax rate in that period.

As a result of the Tax Act, the Company has not had a change in judgement regarding the gross book-tax basis differences in its non-U.S. consolidated subsidiaries. The Tax Act required a one-time transition tax for deemed repatriation of accumulated undistributed earnings of certain foreign investments. If we determine that all or a portion of our foreign earnings are no longer indefinitely reinvested, we may be subject to additional foreign withholding taxes, U.S. taxes on foreign currency fluctuations on these accumulated undistributed earnings, and incremental U.S. state income taxes, beyond the Tax Act's one-time transition tax. The Company continues to record deferred foreign taxes on gross book-tax basis differences to the extent of foreign distributable reserves and excess cash balances for its subsidiary in India. Determining the amount of unrecognized deferred tax liability related to any remaining undistributed foreign earnings is not practicable.

The following table summarizes the changes to the valuation allowance balance (in thousands):

	December 31,
	2020		2019			2018
Beginning balance	$	84,356	$	78,155		$	56,761
Additions charged to expense		5,215		18,138			21,544
Other		7,260		(11,937	)		(150	)
Ending balance	$	96,831	$	84,356		$	78,155

The change in valuation allowance in Other for 2020 of $7.3 million is primarily related to a valuation allowance recorded on deferred tax assets established during purchase accounting from the Univa acquisition. The change in valuation allowance in Other for 2019 of $11.9 million is related to the issuance of convertible debt, net of issuance costs. The change in valuation allowance in Other for 2018 of $0.2 million is related to a decrease in valuation allowance from ASC 606 adoption of $12.6 million, the tax benefit recorded in other comprehensive income of $0.2 million, offset by an increase in valuation allowance recorded for business combinations of $12.6 million.

The following table summarizes the amount and expiration dates of operating loss and tax credit carryforwards at December 31, 2020 (in thousands):

	Expiration dates	Amounts
U.S. general business credits and loss carryforwards	2021-Indefinite	$	79,591
Foreign loss carryforwards	Indefinite		9,990
U.S. foreign tax credits	2027		2,878
Total operating loss and tax credit carryforwards		$	92,459

A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows (in thousands):

	Year ended December 31,
	2020			2019			2018
Unrecognized tax benefits—January 1	$	15,540		$	17,097		$	6,157
Increase in unrecognized tax benefits as a result of:
Additions for tax positions of current period		310			(203	)		234
Additions for tax positions of prior periods		1,890			642			10,866
Reductions for tax positions of prior periods		(8,816	)		(1,834	)		(100	)
Reductions due to statute of limitations		—			(162	)		(60	)
Unrecognized tax benefits—December 31	$	8,924		$	15,540		$	17,097

At December 31, 2020, the Company had $3.5 million of gross unrecognized tax benefits that if recognized would affect the effective tax rate. The Company expects a reduction over the next 12 months in the gross unrecognized tax benefits of approximately $0.4 million which if recognized would not impact the effective tax rate during 2021.

The Company operates globally but considers its more significant tax jurisdictions to include the United States, India, Germany, Japan, and China. India has tax years open for examination from 2009 through 2020. All other significant jurisdictions have open tax years from 2015 through 2020.

The Company records interest and penalties with respect to unrecognized tax benefits as a component of the provision for income taxes. For the years ended December 31, 2020 and 2019, accrued interest and penalties related to unrecognized tax benefits were insignificant.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References + Details

Net (Loss) Income Per Share

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Net (Loss) Income Per Share

14. Net (loss) income per share

Basic net (loss) income per share attributable to common stockholders is computed using the weighted average number of shares of common stock outstanding for the period, excluding stock options and restricted stock units (“RSUs”). Diluted net (loss) income per share attributable to common stockholders is based upon the weighted average number of shares of common stock outstanding for the period and potentially dilutive common shares, including the effect of stock options and RSUs under the treasury stock method. The following table sets forth the computation of the numerators and denominators used in the basic and diluted net (loss) income per share amounts (in thousands, except per share data):

	Year ended December 31,
	2020			2019			2018
Numerator:
Net (loss) income	$	(10,500	)	$	(7,542	)	$	15,535
Denominator:
Denominator for basic (loss) income per share— weighted average shares		73,241			71,544			67,468
Effect of dilutive securities, stock options and RSUs		—			—			7,410
Denominator for dilutive (loss) income per share		73,241			71,544			74,878
Net (loss) income per share attributable to common stockholders, basic	$	(0.14	)	$	(0.11	)	$	0.23
Net (loss) income per share attributable to common stockholders, diluted	$	(0.14	)	$	(0.11	)	$	0.21

Since the Company was in a net loss position for the years ended December 31, 2020 and 2019, basic net loss per share attributable to common stockholders is the same as diluted net loss per share for those periods as the inclusion of all potential common shares outstanding would have been anti-dilutive. For the years ended December 31, 2020 and 2019, respectively, there were 3.1 million and 5.7 million potentially anti-dilutive shares, which were excluded from the computation of net loss per share. For the year ended December 31, 2018, there were no anti-dilutive shares, which were excluded from the computation of net income per share.

The Company expects to settle the principal amount of the Convertible Notes in cash, and therefore, the Company uses the treasury stock method for calculating any potential dilutive effect of the Conversion Option on diluted net (loss) income per share, if applicable. The Conversion Option will have a dilutive impact on net income per share of common stock when the average market price of the Company’s Class A common stock for a given period exceeds the conversion price of the Convertible Notes of $46.50 per share. During the years ended December 31, 2020 and 2019, the Company's weighted average common stock price was below the conversion price of the Convertible Notes.

Retirement Benefits

12 Months Ended

Dec. 31, 2020

Compensation And Retirement Disclosure [Abstract]

Retirement Benefits

15. Retirement benefits

The Company sponsors a 401(k)-profit sharing plan (the “Plan”) for all eligible U.S. employees. This Plan allows eligible employees to contribute up to 80% of their compensation to the Plan. The Company makes discretionary matching contributions to the Plan provided the employee is employed on the last day of the year. Such discretionary contributions vest ratably over five years of service. The Company’s contributions to the Plan were $1.6 million, $1.6 million and $1.3 million for the years ended December 31, 2020, 2019 and 2018, respectively.

The Company also participates in government-mandated retirement and/or termination indemnity plans, benefiting certain non-U.S. employees. Termination benefits are generally lump sum payments based upon an individual’s years of credited service and annual salary at retirement. These plans are generally unfunded, and employees receive payments at the time of retirement or termination under applicable labor laws or agreements. The amount of net benefit cost recorded in the consolidated statements of operations for these plans was $2.7 million, $1.8 million and $1.2 million in 2020, 2019 and 2018, respectively. The amount of benefits paid under these plans was $0.5 million, $0.4 million and $0.4 million in 2020, 2019 and 2018, respectively. The accumulated benefit obligation, unlike the projected benefit obligation, does not reflect expected benefit increases from future salary levels, and was $8.7 million and $6.8 million at December 31, 2020 and 2019, respectively, under these plans. The projected benefit obligation, net of plan assets, was $15.2 million and $11.0 million at December 31, 2020 and 2019, respectively.

A summary of the components of the pension benefits obligation recorded in the consolidated balance sheets are as follows (in thousands):

	December 31,
	2020		2019
Accrued compensation and benefits	$	657	$	596
Other long-term liabilities		14,497		10,379
	$	15,154	$	10,975

The estimated future benefit payments, which reflect expected future service, that are expected to be paid for each of the next five years are as follows (in thousands):

Year ending
December 31, 2021	$	677
December 31, 2022	$	480
December 31, 2023	$	624
December 31, 2024	$	662
December 31, 2025	$	577
Next five years	$	4,772

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section S99
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=21916913&loc=d3e273930-122802

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (o)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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+ Details

Accumulated Other Comprehensive Loss

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Accumulated Other Comprehensive Loss

16. Accumulated other comprehensive loss

The components of accumulated other comprehensive loss are as follows (in thousands):

	Foreign currency translation			Retirement related benefit plans			Total
Balance at December 31, 2017	$	(3,374	)	$	(1,698	)	$	(5,072	)
Other comprehensive income (loss) before reclassification		(5,449	)		90			(5,359	)
Amounts reclassified from accumulated other comprehensive loss		—			(1,177	)		(1,177	)
Tax effects		—			318			318
Other comprehensive income (loss)		(5,449	)		(769	)		(6,218	)
Balance at December 31, 2018		(8,823	)		(2,467	)		(11,290	)
Other comprehensive income (loss) before reclassification		1,895			62			1,957
Amounts reclassified from accumulated other comprehensive loss		—			(179	)		(179	)
Tax effects		—			(16	)		(16	)
Other comprehensive income (loss)		1,895			(133	)		1,762
Balance at December 31, 2019		(6,928	)		(2,600	)		(9,528	)
Other comprehensive income (loss) before reclassification		7,782			(501	)		7,281
Amounts reclassified from accumulated other comprehensive loss		—			(858	)		(858	)
Tax effects		—			308			308
Other comprehensive income (loss)		7,782			(1,051	)		6,731
Balance at December 31, 2020	$	854		$	(3,651	)	$	(2,797	)

Commitments and Contingencies

12 Months Ended

Dec. 31, 2020

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

17. Commitments and contingencies

Swedish Tax Litigation

The Swedish Tax Authorities, or STA, assessed tax (net of utilization of tax attributes), penalties and interest in the amount of $6.2 million related to the acquisition of Panopticon AB by Datawatch Corporation, in 2013 for the years 2013, 2014 and 2015. The STA, upon auditing the acquisition transaction, reached a conclusion that post acquisition, certain assets were removed from Sweden, triggering the tax obligation. The STA is also of the opinion that some services related to product development provided to the new parent company in the U.S. were performed by Panopticon AB at a price below market price triggering tax obligations. Datawatch contested the findings by the STA throughout the audit process including contesting the STA position in the first level of administrative courts. On May 29, 2019, the Administrative Court issued its ruling in favor of Datawatch AB. On July 4, 2019, the STA filed an appeal of the Administrative Court ruling with the Administrative Court of Appeals in Stockholm, effectively continuing to assert that the assessments are in fact appropriate. After relevant submissions by the Company and the STA, the Court of Appeals held a hearing on February 20, 2020.

On March 27, 2020, the Court of Appeals issued its finding in favor of the STA. Pursuant to requirements in Sweden, the Company paid the assessed tax, penalties and interest on April 24, 2020. The Company, in accordance with its right to appeal the ruling to the Administrative Supreme Court of Sweden, filed an appeal of the Court of Appeals ruling citing specific grounds for reconsideration. On November 4, 2020, the Supreme Administrative Court issued a decision that they would not grant leave to appeal, effectively eliminating any further appeal rights in this matter.

Legal proceedings

From time to time, the Company may be subject to legal proceedings and claims in the ordinary course of business. The Company has received, and may in the future continue to receive, claims from third parties asserting, among other things, infringement of their intellectual property rights. Future litigation may be necessary to defend the Company, its partners and its customers by determining the scope, enforceability and validity of third-party proprietary rights, or to establish and enforce the Company’s proprietary rights. The results of any current or future litigation cannot be predicted with certainty and regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of management resources and other factors.

Commitments

The Company has entered into various renewable, nonexclusive license agreements under which the Company has been granted access to the licensor’s technology and the right to sell or use the technology in the Company’s products. Royalties are payable to developers of the software at various rates and amounts, which generally are based upon unit sales or revenue. Royalty fees were

$10.4 million, $10.6 million, and $9.7 million for the years ended December 31, 2020, 2019 and 2018, respectively, and are reported in Cost of revenue—software.

Additionally, the Company has current contractual purchase obligations for services supporting business operations, including non-cancelable agreements. The future purchase obligations for these agreements are as follows (in thousands):

Year ending December 31,
2021	$	6,436
2022		6,884
2023		6,509
2024		3,560
2025		3,307
Thereafter		—
Total	$	26,696

Segment Information

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Segment Information

18. Segment information

The Company defines its operating segments as components of its business where separate financial information is available and used by the chief operating decision maker (“CODM”) in deciding how to allocate resources to its segments and in assessing performance. The Company’s CODM is its Chief Executive Officer.

The Company has identified two reportable segments for financial reporting purposes: Software and Client Engineering Services. The primary measure of segment operating performance is Adjusted EBITDA, which is defined as net income (loss) adjusted for income tax expense (benefit), interest expense, interest income and other, depreciation and amortization, stock-based compensation expense, restructuring charges, asset impairment charges and other special items as determined by management. Adjusted EBITDA includes an allocation of corporate headquarters costs.

The Software reportable segment derives revenue from the sale and lease of software licenses and cloud solutions in the areas of simulation, high-performance computing, and artificial intelligence to design and optimize high-performance, efficient, innovative and sustainable products and processes for improved business performance. The Software segment also generates revenue by providing services related to the Company’s software, including consulting, training, and implementation services. To a much lesser extent, the Software segment includes revenue from the sale of hardware products.

The Client Engineering Services reportable segment provides support to the Company’s customers with long-term ongoing expertise. The Company hires simulation specialists, industrial designers, design engineers, materials experts, development engineers, manufacturing engineers, data scientists, and information technology specialists for placement at customer sites for specific customer-directed assignments.

The “All other” represents innovative services and products, including toggled ^®, the Company’s LED lighting business. toggled^® is focused on developing and selling next-generation solid state lighting technology along with communication and control protocols based, in part, on intellectual property for the direct replacement of fluorescent tubes with LED lighting. Other businesses combined within Other include potential services and product concepts that are still in their development stages and the Company’s WEYV business, which ceased operations in the third quarter of 2019.

Inter-segment sales are not significant for any period presented. The CODM does not review asset information by segment when assessing performance, therefore no asset information is provided for reportable segments. The accounting policies of the segments are the same as those described in Note 2—Summary of significant accounting policies.

The following tables are in thousands:

Year ended December 31, 2020	Software		CES		All other			Total
Revenue	$	418,165	$	44,320	$	7,436		$	469,921
Adjusted EBITDA	$	53,820	$	5,129	$	(1,661	)	$	57,288

Year ended December 31, 2019	Software		CES		All other			Total
Revenue	$	401,278	$	48,987	$	8,650		$	458,915
Adjusted EBITDA	$	38,834	$	5,255	$	(4,540	)	$	39,549

Year ended December 31, 2018	Software		CES		All other			Total
Revenue	$	341,306	$	47,852	$	7,221		$	396,379
Adjusted EBITDA	$	48,643	$	5,155	$	(3,618	)	$	50,180

	Year ended December 31,
	2020			2019			2018
Reconciliation of Adjusted EBITDA to GAAP income (loss) before income taxes:
Adjusted EBITDA	$	57,288		$	39,549		$	50,180
Stock-based compensation expense		(21,355	)		(8,528	)		(3,339	)
Interest expense		(11,598	)		(6,371	)		(200	)
Interest income and other⁽¹⁾		1,503			260			(4,883	)
Depreciation and amortization		(23,806	)		(21,522	)		(14,734	)
Income before income taxes	$	2,032		$	3,388		$	27,024

⁽¹⁾

Included for the year ended December 31, 2020 are a) $1.0 million of proceeds from settlements related to a historical acquisition, and b) $0.6 million of severance expense. Included for the year ended December 31, 2019 are a) acquisition related costs of $0.6 million, b) severance expense of $0.4 million, and c) impairment charges for royalty contracts of $1.0 million. Included for the year ended December 31, 2018 are a) costs from the acquisition of Datawatch of $10.4 million, b) gain on the sale of a building of $4.4 million, c) impairment charges for royalty contracts and trade names of $2.8 million, and d) an income adjustment for a change in estimated legal expenses of $2.0 million.

Revenue is attributed to geographic areas based on the country of origin. The following table provides sales to external customers and long-lived assets for each of the geographic areas in which the Company operates (in thousands):

	Revenue						Long-lived assets (1)
	Year ended December 31,						December 31,
	2020		2019		2018		2020		2019
United States	$	233,611	$	219,053	$	186,026	$	60,479	$	55,319
Other countries		12,127		14,753		8,604		8,378		10,190
Total Americas		245,738		233,806		194,630		68,857		65,509
Germany		48,559		50,102		45,664		9,201		3,405
France		15,287		17,210		16,154		1,078		1,224
Other countries		49,403		49,312		42,846		11,730		11,316
Total Europe, Middle East and Africa		113,249		116,624		104,664		22,009		15,945
Japan		41,109		37,757		35,478		2,009		2,036
Other countries		69,825		70,728		61,607		8,441		8,941
Total Asia Pacific		110,934		108,485		97,085		10,450		10,977
Total	$	469,921	$	458,915	$	396,379	$	101,316	$	92,431

(1)	Includes property and equipment, net and definite-lived intangible assets, net.

Concentrations of credit risk

The Company’s financial instruments that are potentially subject to concentrations of credit risk consist primarily of cash and trade receivables. The risk with respect to trade receivables is partially mitigated by the diversity, both by geography and by industry, of the Company’s customer base. The Company’s accounts receivable is derived from sales to a large number of direct customers and resellers around the world. Sales to customers within the automotive industry accounted for approximately 36%, 40%, and 45% of the Company’s 2020, 2019 and 2018 revenue, respectively, with no other industry representing more than 10% of revenue. No individual customer accounted for 10% or more of revenue in the years ended December 31, 2020, 2019 or 2018.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-URI http://asc.fasb.org/topic&trid=2134510

+ Details

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Principles of Consolidation

Principles of consolidation

Use of Estimates

Use of estimates

Foreign Currency Translation

Foreign currency translation

Revenue Recognition

Revenue recognition

Software revenue

Software related services

Client engineering services

Other

Cash, Cash Equivalents and Restricted Cash

Cash, cash equivalents and restricted cash

	December 31,
	2020		2019
Cash and cash equivalents	$	241,221	$	223,117
Restricted cash included in other long-term assets		326		380
Total cash, cash equivalents, and restricted cash	$	241,547	$	223,497

Restricted cash represents amounts required for a contractual agreement with an insurer for the payment of potential health insurance claims, and term deposits for bank guarantees.

Accounts Receivable, Net

Accounts receivable, net

Accounts receivable, net consisted of the following (in thousands):

	December 31,
	2020		2019
Accounts receivable, trade	$	111,162	$	100,461
Contract assets		6,716		4,523
Accounts receivable, net	$	117,878	$	104,984

	For the Year Ended December 31,
	2020			2019			2018
Balance, beginning of year	$	(1,415	)	$	(1,150	)	$	(798	)
Adoption of ASC 326 on beginning allowance		(388	)		—			—
Provision charged to expense		(1,259	)		(671	)		(394	)
Write-offs, net of recoveries		563			413			3
Effects of foreign currency translation		(60	)		(7	)		39
Balance, end of year	$	(2,559	)	$	(1,415	)	$	(1,150	)

Property and Equipment, Net

Property and equipment, net

Software Development Costs

Software development costs

Impairment of Long-Lived Assets

Impairment of long-lived assets

Goodwill and Other Indefinite-Lived Intangible Assets

Goodwill and other indefinite-lived intangible assets

Receivable for R&D Credit

Receivable for R&D credit

Derivative Financial Instruments

Derivative financial instruments

Income Taxes

Income taxes

Research and Development Costs

Research and development costs

Advertising Costs

Advertising costs

Advertising costs are expensed as incurred. Advertising expenses were $4.0 million, $4.5 million and $4.4 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Mezzanine Equity

Mezzanine equity

Leases

Stock-Based Compensation

Stock-based compensation

Business Combinations

Business combinations

Recent Accounting Guidance

Recent accounting guidance

Accounting standards adopted

Accounting standards not yet adopted

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Reconciliation of Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the consolidated balance sheets that sum to the total of the amounts reported in the consolidated statements of cash flows (in thousands):

	December 31,
	2020		2019
Cash and cash equivalents	$	241,221	$	223,117
Restricted cash included in other long-term assets		326		380
Total cash, cash equivalents, and restricted cash	$	241,547	$	223,497

Schedule of Accounts Receivable Net

Accounts receivable, net consisted of the following (in thousands):

	December 31,
	2020		2019
Accounts receivable, trade	$	111,162	$	100,461
Contract assets		6,716		4,523
Accounts receivable, net	$	117,878	$	104,984

Schedule of Provision for Credit Loss

Activity in the provision for credit loss was as follows (in thousands):

	For the Year Ended December 31,
	2020			2019			2018
Balance, beginning of year	$	(1,415	)	$	(1,150	)	$	(798	)
Adoption of ASC 326 on beginning allowance		(388	)		—			—
Provision charged to expense		(1,259	)		(671	)		(394	)
Write-offs, net of recoveries		563			413			3
Effects of foreign currency translation		(60	)		(7	)		39
Balance, end of year	$	(2,559	)	$	(1,415	)	$	(1,150	)

Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2020

Revenue From Contract With Customer [Abstract]

Schedule of Disaggregation of Revenue

The Company disaggregates its software revenue by type of performance obligation and timing of revenue recognition as follows (in thousands):

	Year Ended December 31,
	2020		2019		2018
Term licenses	$	224,472	$	201,881	$	168,909
Perpetual licenses		35,493		42,440		38,255
Maintenance		117,159		103,699		86,150
Professional software services		14,587		18,682		11,047
Software related services		26,454		34,576		36,945
Client engineering services		44,320		48,987		47,852
Other		7,436		8,650		7,221
Total revenue	$	469,921	$	458,915	$	396,379

Acquisitions and Disposals (Tables)

12 Months Ended

Dec. 31, 2020

Business Combinations [Abstract]

Summary of Amounts of Identified Assets Acquired and Liabilities Assumed at the Acquisition Date

The following table summarizes the preliminary purchase consideration transferred to acquire Univa and the amounts of identified assets acquired and liabilities assumed at the acquisition date (in thousands):

Fair value of consideration transferred	$	30,184
Recognized amounts of identifiable assets acquired and liabilities assumed:
Cash		193
Accounts receivable		956
Other assets		164
Trade names (4-year life)		200
Developed technology (6-year life)		9,000
Customer relationships (7-year life)		4,800
Accounts payable and other liabilities		(891	)
Deferred revenue		(874	)
Deferred tax liabilities		(1,100	)
Total net identifiable assets acquired and liabilities assumed		12,448
Goodwill	$	17,736

Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2020

Property Plant And Equipment [Abstract]

Summary of Property and Equipment

Property and equipment consisted of the following (in thousands):

	Estimated			December 31,
	useful lives			2020		2019
Land	Indefinite			$	10,067	$	9,942
Building and improvements	5-39 years				15,630		15,512
Computer equipment and software	3-5 years				41,451		37,361
Office furniture and equipment	5-15 years				10,136		8,029
Leasehold improvements		(1	)		9,652		9,014
Right of use assets under finance leases		(1	)		2,665		2,745
Total property and equipment					89,601		82,603
Less: accumulated depreciation and amortization					53,269		46,306
Property and equipment, net				$	36,332	$	36,297

(1)	Shorter of lease term or estimated useful life, generally ranging from five to ten years.

Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill Attributable to Software Reportable Segment

The changes in the carrying amount of goodwill, which is attributable to the Software reportable segment, are as follows (in thousands):

Balance at December 31, 2018	$	210,532
Acquisitions		21,922
Effects of foreign currency translation and other		1,229
Balance at December 31, 2019		233,683
Acquisitions		25,932
Effects of foreign currency translation and other		4,866
Balance at December 31, 2020	$	264,481

Schedule of Other Intangible Assets

A summary of other intangible assets is shown below (in thousands):

	December 31, 2020
	Weighted average amortization period	Gross carrying amount		Accumulated amortization		Net carrying amount
Definite-lived intangible assets:
Developed technology	4-6 years	$	78,841	$	37,651	$	41,190
Customer relationships	7-10 years		40,207		16,673		23,534
Other intangibles	4-10 years		344		84		260
Total definite-lived intangible assets			119,392		54,408		64,984
Indefinite-lived intangible assets:
Trade names			11,130				11,130
Total other intangible assets		$	130,522	$	54,408	$	76,114

	December 31, 2019
	Weighted average amortization period	Gross carrying amount		Accumulated amortization		Net carrying amount
Definite-lived intangible assets:
Developed technology	4-6 years	$	60,916	$	25,838	$	35,078
Customer relationships	7-10 years		32,582		11,575		21,007
Other intangibles	10 years		111		62		49
Total definite-lived intangible assets			93,609		37,475		56,134
Indefinite-lived intangible assets:
Trade names			10,941				10,941
Total other intangible assets		$	104,550	$	37,475	$	67,075

Summary of Estimated Amortization Expense

Estimated amortization expense for the next five years as of December 31, 2020 is as follows (in thousands):

Year ending
December 31, 2021	$	17,763
December 31, 2022		14,348
December 31, 2023		15,406
December 31, 2024		8,204
December 31, 2025		4,745
Thereafter		4,518
Total	$	64,984

Debt (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Schedule of Carrying Value of Debt

The carrying value of debt is as follows (in thousands):

	December 31,
	2020		2019
Convertible senior notes	$	230,000	$	230,000
Revolving credit facility		30,000		—
Obligations for finance leases		775		1,174
Total debt		260,775		231,174
Less: unamortized debt discount		37,190		46,820
Less: unamortized debt issuance costs		4,548		5,686
Less: current portion of long-term debt		30,384		430
Long-term debt, net of current portion	$	188,653	$	178,238

Schedule of Net Carrying Value of Liability Component of Convertible Notes

The net carrying value of the liability component of the Convertible Notes was as follows (in thousands):

	December 31,
	2020		2019
Principal	$	230,000	$	230,000
Less: unamortized debt discount		37,190		46,820
Less: unamortized debt issuance costs		4,510		5,686
Net carrying amount	$	188,300	$	177,494

Schedule of Interest Expense Related to Convertible Notes

The interest expense related to the Convertible Notes was as follows (in thousands):

	For the Year Ended December 31,
	2020		2019
Contractual interest expense	$	575	$	313
Amortization of debt issuance cost and discount		10,806		5,635
Total	$	11,381	$	5,948

Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Schedule of Components of Lease Cost

The components of lease cost were as follows (in thousands):

	For the Year Ended December 31,
	2020		2019
Operating lease cost	$	13,412	$	13,287

Finance lease cost:
Amortization of ROU assets	$	634	$	525
Interest on lease liabilities		32	21
Total finance lease cost	$	666	$	546

Schedule of Supplemental Balance Sheet Information Related to Lease Liabilities

Supplemental balance sheet information related to lease liabilities was as follows:

	December 31,
(in thousands, except lease term and discount rate)	2020			2019
Operating leases:
Operating lease ROU assets	$	33,526		$	28,134

Current portion of operating lease liabilities	$	10,331		$	9,141
Operating lease liabilities, net of current portion		24,323			20,174
Total operating lease liabilities	$	34,654		$	29,315

Weighted average remaining lease term	4.2			4.2
Weighted average discount rate		4.7	%		5.6	%

Finance leases:
Property and equipment	$	2,665		$	2,745
Accumulated depreciation		(1,797	)		(1,447	)
Property and equipment, net	$	868		$	1,298

Current portion of long-term debt	$	422		$	430
Long-term debt, net of current portion		353			744
Total finance lease liabilities	$	775		$	1,174

Weighted average remaining lease term		2.1			2.7
Weighted average discount rate		3.1	%		3.5	%

Schedule of Supplemental Cash Flow Information Related to Leases

Supplemental cash flow information related to leases was as follows (in thousands):

	For the Year Ended December 31,
	2020			2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	(11,875	)	$	(11,355	)
Operating cash flows from finance leases	$	(32	)	$	(46	)
Financing cash flows from finance leases	$	(456	)	$	(438	)

ROU assets obtained in exchange for lease obligations:
Operating leases	$	11,713		$	11,251
Finance leases	$	118		$	632

Schedule of Maturities of Operating Lease Liabilities

Maturities of operating lease liabilities at December 31, 2020, were as follows (in thousands):

Year ending December 31,
2021	$	11,704
2022		9,408
2023		6,900
2024		4,178
2025		2,786
Thereafter		3,203
Total lease payments		38,179
Less: imputed interest		3,525
Total operating lease liabilities	$	34,654

Other Liabilities (Tables)

12 Months Ended

Dec. 31, 2020

Other Liabilities Disclosure [Abstract]

Summary of Other Accrued Expenses and Current Liabilities

The following table provides the details of other accrued expenses and current liabilities (in thousands):

	December 31,
	2020		2019
Income taxes payable	$	7,250	$	6,008
Accrued VAT		6,604		5,312
Accrued professional fees		3,156		2,581
Accrued royalties		2,009		2,314
Obligations for acquisition of businesses		1,957		1,362
Defined contribution plan liabilities		1,660		1,593
Non-income tax liabilities		1,366		1,253
Billings in excess of cost		1,108		879
Other current liabilities		5,872		7,301
Total	$	30,982	$	28,603

Summary of Other Long-term Liabilities

The following table provides the details of other long-term liabilities (in thousands):

	December 31,
	2020		2019
Pension and other post retirement liabilities	$	14,497	$	10,379
Deferred tax liabilities		8,028		6,275
Other liabilities		4,889		10,018
Total	$	27,414	$	26,672

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Summary of Fair value of Company's Stock Options Granted

The fair values of the Company’s stock options granted during the year ended December 31, 2020 and 2019, were estimated using the following assumptions:

	2020 grants			2019 grants
Weighted average grant date fair value per share	$29.22 - 57.72			$	38.11
Expected volatility	34 - 35%				42	%
Expected term (in years)		6.25			6.25
Risk-free interest rate	0.46 - 0.6%				1.80	%
Expected dividend yield		0	%		0	%

Summary of Stock-Based Compensation

Stock-based compensation expense

The stock-based compensation expense was recorded as follows (in thousands):

	Year ended December 31,
	2020		2019		2018
Cost of revenue-software	$	2,473	$	1,069	$	31
Research and development		8,372		2,917		740
Sales and marketing		6,423		2,250		910
General and administrative		4,087		2,292		1,658
Total stock-based compensation expense	$	21,355	$	8,528	$	3,339

NSO Plan [Member]

Summary of Stock Option Activity

The following table summarizes the stock option activity under the NSO Plan:

	Number of options			Weighted average exercise price per share		Weighted average remaining contractual term (years)		Aggregate intrinsic value (in millions)
Outstanding at January 1, 2020		3,557,436		$	0.000025		17.0	$	127.8
Exercised		(1,023,505	)	$	0.000025
Forfeited		—		$	—
Outstanding and exercisable at December 31, 2020		2,533,931		$	0.000025		16.0	$	147.4

ISO Plan [Member]

Summary of Stock Option Activity

The following table summarizes the stock option activity under the 2001 Stock-based compensation plans for the periods indicated as follows:

	Number of options			Weighted average exercise price per share		Weighted average remaining contractual term (years)		Aggregate intrinsic value (in millions)
Outstanding at January 1, 2020		103,000		$	0.64		1.0	$	3.6
Exercised		(103,000	)	$	0.64
Forfeited		—		$	—
Outstanding and exercisable at December 31, 2020		—		$	—		—		—

2012 Plan [Member]

Summary of Stock Option Activity

The following table summarizes the stock option activity under the 2012 Plan for the periods indicated as follows:

	Number of options			Weighted average exercise price per share		Weighted average remaining contractual term (years)		Aggregate intrinsic value (in millions)
Outstanding at January 1, 2020		1,183,817		$	4.23		6.1
Granted		—		$	—
Exercised		(351,165	)	$	4.18
Forfeited		(8,000	)	$	4.31
Outstanding at December 31, 2020		824,652		$	4.26		5.1
Exercisable at December 31, 2020		691,362		$	4.08		4.8	$	37.4

2017 Plan [Member]

Summary of Stock Option Activity

The following table summarizes the stock option activity under the 2017 Plan for the period:

	Number of options			Weighted average exercise price per share		Weighted average remaining contractual term (years)		Aggregate intrinsic value (in millions)
Outstanding at January 1, 2020		20,000		$	38.11		9.2
Granted		4,209,454		$	45.68
Exercised		(5,000	)	$	38.11
Forfeited		(20,972	)	$	40.80
Outstanding at December 31, 2020		4,203,482		$	45.68		9.7
Exercisable at December 31, 2020		158		$	29.22		0.2

Summary of Restricted Stock Units Awarded

The following table summarizes the restricted stock units, or RSUs, awarded under the 2017 Plan for the period:

	Number of RSUs
Outstanding at January 1, 2020		781,301
Granted		641,723
Vested		(222,716	)
Forfeited		(45,372	)
Outstanding at December 31, 2020		1,154,936

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Components of Income (Loss) Before Income Taxes

The components of income (loss) before income taxes are as follows (in thousands):

	Year ended December 31,
	2020			2019			2018
U.S.	$	(22,127	)	$	(14,732	)	$	4,228
Non-U.S.		24,159			18,120			22,796
	$	2,032		$	3,388		$	27,024

Schedule of Significant Components of Income Tax Expense

The significant components of the income tax expense are as follows (in thousands):

	Year ended December 31,
	2020			2019			2018
Current
U.S. Federal	$	—		$	—		$	2
Non-U.S.		23,197			11,434			12,629
U.S. State and Local		(315	)		446			(16	)
Total current		22,882			11,880			12,615
Deferred
U.S. Federal		(881	)		193			1,714
Non-U.S.		(9,849	)		(1,143	)		(2,823	)
U.S. State and Local		380			—			(17	)
Total deferred		(10,350	)		(950	)		(1,126	)
Income tax expense	$	12,532		$	10,930		$	11,489

Reconciliation of Income Taxes Calculated at U.S. Federal Statutory Income Tax Rate

The reconciliation of income taxes calculated at the U.S. Federal statutory income tax rate to income tax expense is as follows (in thousands):

	Year ended December 31,
	2020			2019			2018
U.S. federal statutory rate		21	%		21	%		21	%
Income taxes at U.S. federal statutory rate	$	427		$	711		$	5,675
Foreign income taxes at rates other than the federal statutory rate		1,161			1,247			2,179
U.S. state and local income taxes, net of U.S. federal tax benefit		(4,892	)		(6,836	)		(3,453	)
U.S. effect of changes in tax laws		4,946			—			—
U.S. effect of foreign operations		1,205			8,609			—
Change in valuation allowance		5,215			18,138			21,544
Foreign withholding taxes		6,691			5,975			5,103
U.S. foreign tax credit and deduction		(1,308	)		(7,059	)		(5,648	)
Research and development tax credit		2,576			(2,600	)		(2,819	)
Stock-based compensation		(5,001	)		(4,574	)		(14,964	)
Meals & entertainment		77			246			181
Other		640			(1,068	)		1,206
Uncertain tax positions		720			(1,859	)		903
Acquisition costs		75			—			503
Tax law changes		—			—			1,079
Income tax expense	$	12,532		$	10,930		$	11,489

Schedule of Deferred Tax Assets and Liabilities

	December 31,
	2020			2019
Deferred tax assets:
Deferred revenue	$	12,135		$	11,408
Net operating loss carryforwards		66,160			38,745
Tax credit carryforwards		26,299			38,981
Stock-based compensation		3,766			6,480
Capitalized research and development		6,472			7,162
Lease obligation		9,956			7,579
Employee benefits		5,980			5,189
Other		2,618			1,968
Total gross deferred tax assets		133,386			117,512
Less: valuation allowances		(96,831	)		(84,356	)
Net deferred tax assets⁽¹⁾		36,555			33,156
Deferred tax liabilities:
Prepaid royalties		584			—
Property and equipment and intangibles		16,177			13,588
Deferred tax on investment in subsidiary		790			474
Lease right of use asset		9,610			7,247
Convertible debt, net of issuance costs		8,685			10,899
Other		1,612			1,432
Total deferred tax liabilities		37,458			33,640
Total net deferred tax (liabilities) assets	$	(903	)	$	(484	)

(1)	Reflects gross amount before jurisdictional netting of deferred tax assets and liabilities.

Summary of Changes to Valuation Allowance Balance

The following table summarizes the changes to the valuation allowance balance (in thousands):

	December 31,
	2020		2019			2018
Beginning balance	$	84,356	$	78,155		$	56,761
Additions charged to expense		5,215		18,138			21,544
Other		7,260		(11,937	)		(150	)
Ending balance	$	96,831	$	84,356		$	78,155

Summary of Operating Loss and Tax Credit Carryforwards

The following table summarizes the amount and expiration dates of operating loss and tax credit carryforwards at December 31, 2020 (in thousands):

	Expiration dates	Amounts
U.S. general business credits and loss carryforwards	2021-Indefinite	$	79,591
Foreign loss carryforwards	Indefinite		9,990
U.S. foreign tax credits	2027		2,878
Total operating loss and tax credit carryforwards		$	92,459

Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows (in thousands):

	Year ended December 31,
	2020			2019			2018
Unrecognized tax benefits—January 1	$	15,540		$	17,097		$	6,157
Increase in unrecognized tax benefits as a result of:
Additions for tax positions of current period		310			(203	)		234
Additions for tax positions of prior periods		1,890			642			10,866
Reductions for tax positions of prior periods		(8,816	)		(1,834	)		(100	)
Reductions due to statute of limitations		—			(162	)		(60	)
Unrecognized tax benefits—December 31	$	8,924		$	15,540		$	17,097

Net (Loss) Income Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Computation of Numerators and Denominators Used in Basic and Diluted Net (Loss) Income Per Share Amounts

The following table sets forth the computation of the numerators and denominators used in the basic and diluted net (loss) income per share amounts (in thousands, except per share data):

	Year ended December 31,
	2020			2019			2018
Numerator:
Net (loss) income	$	(10,500	)	$	(7,542	)	$	15,535
Denominator:
Denominator for basic (loss) income per share— weighted average shares		73,241			71,544			67,468
Effect of dilutive securities, stock options and RSUs		—			—			7,410
Denominator for dilutive (loss) income per share		73,241			71,544			74,878
Net (loss) income per share attributable to common stockholders, basic	$	(0.14	)	$	(0.11	)	$	0.23
Net (loss) income per share attributable to common stockholders, diluted	$	(0.14	)	$	(0.11	)	$	0.21

Retirement Benefits (Tables)

12 Months Ended

Dec. 31, 2020

Compensation And Retirement Disclosure [Abstract]

Schedule of Pension Benefits Obligation Recorded in Consolidated Balance Sheets

A summary of the components of the pension benefits obligation recorded in the consolidated balance sheets are as follows (in thousands):

	December 31,
	2020		2019
Accrued compensation and benefits	$	657	$	596
Other long-term liabilities		14,497		10,379
	$	15,154	$	10,975

Schedule of Estimated Future Benefit Payments

The estimated future benefit payments, which reflect expected future service, that are expected to be paid for each of the next five years are as follows (in thousands):

Year ending
December 31, 2021	$	677
December 31, 2022	$	480
December 31, 2023	$	624
December 31, 2024	$	662
December 31, 2025	$	577
Next five years	$	4,772

Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Components of Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss are as follows (in thousands):

	Foreign currency translation			Retirement related benefit plans			Total
Balance at December 31, 2017	$	(3,374	)	$	(1,698	)	$	(5,072	)
Other comprehensive income (loss) before reclassification		(5,449	)		90			(5,359	)
Amounts reclassified from accumulated other comprehensive loss		—			(1,177	)		(1,177	)
Tax effects		—			318			318
Other comprehensive income (loss)		(5,449	)		(769	)		(6,218	)
Balance at December 31, 2018		(8,823	)		(2,467	)		(11,290	)
Other comprehensive income (loss) before reclassification		1,895			62			1,957
Amounts reclassified from accumulated other comprehensive loss		—			(179	)		(179	)
Tax effects		—			(16	)		(16	)
Other comprehensive income (loss)		1,895			(133	)		1,762
Balance at December 31, 2019		(6,928	)		(2,600	)		(9,528	)
Other comprehensive income (loss) before reclassification		7,782			(501	)		7,281
Amounts reclassified from accumulated other comprehensive loss		—			(858	)		(858	)
Tax effects		—			308			308
Other comprehensive income (loss)		7,782			(1,051	)		6,731
Balance at December 31, 2020	$	854		$	(3,651	)	$	(2,797	)

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2020

Commitments And Contingencies Disclosure [Abstract]

Future Purchase Obligations

The future purchase obligations for these agreements are as follows (in thousands):

Year ending December 31,
2021	$	6,436
2022		6,884
2023		6,509
2024		3,560
2025		3,307
Thereafter		—
Total	$	26,696

Segment Information (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Schedule of Segment Reporting Information

The following tables are in thousands:

Year ended December 31, 2020	Software		CES		All other			Total
Revenue	$	418,165	$	44,320	$	7,436		$	469,921
Adjusted EBITDA	$	53,820	$	5,129	$	(1,661	)	$	57,288

Year ended December 31, 2019	Software		CES		All other			Total
Revenue	$	401,278	$	48,987	$	8,650		$	458,915
Adjusted EBITDA	$	38,834	$	5,255	$	(4,540	)	$	39,549

Year ended December 31, 2018	Software		CES		All other			Total
Revenue	$	341,306	$	47,852	$	7,221		$	396,379
Adjusted EBITDA	$	48,643	$	5,155	$	(3,618	)	$	50,180

Reconciliation of U.S. GAAP Income (Loss) Before Income Taxes to Adjusted EBITDA

	Year ended December 31,
	2020			2019			2018
Reconciliation of Adjusted EBITDA to GAAP income (loss) before income taxes:
Adjusted EBITDA	$	57,288		$	39,549		$	50,180
Stock-based compensation expense		(21,355	)		(8,528	)		(3,339	)
Interest expense		(11,598	)		(6,371	)		(200	)
Interest income and other⁽¹⁾		1,503			260			(4,883	)
Depreciation and amortization		(23,806	)		(21,522	)		(14,734	)
Income before income taxes	$	2,032		$	3,388		$	27,024

⁽¹⁾

Summary of Sales to External Customers and Long-Lived Assets by Geographical Areas

	Revenue						Long-lived assets (1)
	Year ended December 31,						December 31,
	2020		2019		2018		2020		2019
United States	$	233,611	$	219,053	$	186,026	$	60,479	$	55,319
Other countries		12,127		14,753		8,604		8,378		10,190
Total Americas		245,738		233,806		194,630		68,857		65,509
Germany		48,559		50,102		45,664		9,201		3,405
France		15,287		17,210		16,154		1,078		1,224
Other countries		49,403		49,312		42,846		11,730		11,316
Total Europe, Middle East and Africa		113,249		116,624		104,664		22,009		15,945
Japan		41,109		37,757		35,478		2,009		2,036
Other countries		69,825		70,728		61,607		8,441		8,941
Total Asia Pacific		110,934		108,485		97,085		10,450		10,977
Total	$	469,921	$	458,915	$	396,379	$	101,316	$	92,431

(1)	Includes property and equipment, net and definite-lived intangible assets, net.

Description of Business - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Jun. 07, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Proceeds from the exercise of stock options		$ 1,710	$ 1,510	$ 2,077
Offering [Member] \| Class A Common Stock [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of shares issued and sold	4,056,004
Price per share	$ 35.00
Proceeds from issuance of Class A common stock in follow-on offering, net of underwriting discounts and commissions	$ 135,600
Stock issuance, offering costs	$ 400
Number of shares of common stock sold	2,307,420
Shares issued upon conversion	1,675,420
Exercise of stock options (in shares)	257,000
Proceeds from the exercise of stock options	$ 500
Offering [Member] \| Class B Common Stock [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Conversion from Class B to Class A	1,675,420
Underwriters [Member] \| Offering [Member] \| Class A Common Stock [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Shares Sold From Underwriters Allotment	763,424

Summary of Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Cash and cash equivalents	$ 241,221	$ 223,117
Restricted cash included in other long-term assets	326	380
Total cash, cash equivalents, and restricted cash	$ 241,547	$ 223,497	$ 35,685	$ 39,578

Summary of Significant Accounting Policies - Schedule of Accounts Receivable Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts Notes Loans And Financing Receivable Gross Allowance And Net [Abstract]
Accounts receivable, trade	$ 111,162	$ 100,461
Contract assets	6,716	4,523
Accounts receivable, net	$ 117,878	$ 104,984

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2020
Accounting Policies [Line Items]
Provision for credit loss	$ 2,559,000	$ 1,415,000	$ 1,150,000	$ 798,000
Impairment losses	0	0	0
Impairment of intangible assets	0		608,000
Income tax receivable, current	6,736,000	7,264,000
Advertising expenses	$ 4,000,000.0	4,500,000	$ 4,400,000
Shares issued	133,336
Remaining mezzanine equity	66,664
Retained earnings	$ (93,293,000)	(82,405,000)
Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounting Policies [Line Items]
Provision for credit loss		388,000
Restricted Stock Units (RSUs) [Member]
Accounting Policies [Line Items]
Stock-based compensation awards requisite service period	4 years
Class A Common Stock [Member] \| Put Option [Member]
Accounting Policies [Line Items]
Put right exercise period from date of purchase				5 years
Shares issued				200,000
Put right, exercise price				$ 12.50
Ministry of the Economy, Finance and Industry, France [Member] \| Research and Development Tax Credit Carryforward [Member]
Accounting Policies [Line Items]
Tax credit carryforward, period	3 years
Income tax receivable	$ 13,200,000	12,100,000
Income tax receivable, current	3,200,000	2,500,000
Income tax receivable, noncurrent	$ 10,000,000.0	$ 9,600,000
Building and Improvements [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful life	5 years
Building and Improvements [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful life	39 years
Computer Equipment and Software [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful life	3 years
Computer Equipment and Software [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful life	5 years
Office Furniture and Equipment [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful life	5 years
Office Furniture and Equipment [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful life	15 years
ASU 2016-13
Accounting Policies [Line Items]
Change in provision for credit loss	$ 400,000
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2020
ASU 2016-13 \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounting Policies [Line Items]
Retained earnings					$ 400,000
ASU 2018-13
Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2020
ASU 2018-15
Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2020

Summary of Significant Accounting Policies - Schedule of Provision for Credit Loss (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts Notes And Loans Receivable [Line Items]
Balance, beginning of year	$ (1,415)	$ (1,150)	$ (798)
Provision charged to expense	(1,259)	(671)	(394)
Write-offs, net of recoveries	563	413	3
Effects of foreign currency translation	(60)	(7)	39
Balance, end of year	(2,559)	(1,415)	$ (1,150)
Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounts Notes And Loans Receivable [Line Items]
Balance, beginning of year	$ (388)
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Balance, end of year		$ (388)

- Definition

Indicates amendment to accounting standards.

+ References

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+ Details

Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Total revenue	$ 469,921	$ 458,915	$ 396,379
Term Licenses [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	224,472	201,881	168,909
Perpetual Licenses [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	35,493	42,440	38,255
Maintenance [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	117,159	103,699	86,150
Professional Software Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	14,587	18,682	11,047
Software Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	26,454	34,576	36,945
Client Engineering Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	44,320	48,987	47,852
Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 7,436	$ 8,650	$ 7,221

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-Paragraph 30
-Subparagraph (a)
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-Name Accounting Standards Codification
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-Paragraph 4
-Subparagraph (a)
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-Name Accounting Standards Codification
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-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

+ Details

Revenue from Contracts with Customers - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue From Contracts With Customers [Line Items]
Percentage of net revenues through indirect channels	10.00%	10.00%	10.00%
Capitalized contract cost, amortization period	4 years
Capitalized contract cost, amortization method	straight-line basis
Contract assets	$ 6,716	$ 4,523
Deferred revenue, revenue recognized	74,500
Contracted revenue not yet recognized	$ 131,400	$ 113,500
Revenue recognize percentage	84.00%	80.00%
Sales and Marketing Expense [Member]
Revenue From Contracts With Customers [Line Items]
Sales commissions	$ 5,000	$ 4,500
Prepaid and Other Current Assets [Member]
Revenue From Contracts With Customers [Line Items]
Capitalized contract cost net, current	3,700	2,300
Contract assets	1,400	2,700
Other Long-Term Assets [Member]
Revenue From Contracts With Customers [Line Items]
Capitalized contract cost net, noncurrent	600	800
Contract assets	1,300
Accounts Receivable [Member]
Revenue From Contracts With Customers [Line Items]
Contract assets	$ 6,700	$ 4,500

Acquisitions and Disposals - Additional Information (Detail) - USD ($) $ in Thousands			1 Months Ended		12 Months Ended
	Oct. 31, 2022	Nov. 07, 2019	Sep. 30, 2020	Oct. 31, 2019	Dec. 31, 2020
Univa [Member]
Business Acquisition [Line Items]
Business acquisition, preliminary base purchase price			$ 30,200
Preliminary base purchase price allocation maximum evaluation period from acquisition date					1 year
Fair value of consideration transferred			$ 30,184
Other Business Acquisitions [Member]
Business Acquisition [Line Items]
Fair value of consideration transferred					$ 16,900
Other Business Acquisitions [Member] \| Goodwill [Member]
Business Acquisition [Line Items]
Fair value of consideration transferred					8,200
Other Business Acquisitions [Member] \| Developed Technology [Member]
Business Acquisition [Line Items]
Fair value of consideration transferred					6,200
Other Business Acquisitions [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Fair value of consideration transferred					2,200
Other Business Acquisitions [Member] \| Tax Deduction [Member]
Business Acquisition [Line Items]
Fair value of consideration transferred					$ 700
Polliwog Co. Ltd. [Member] \| Stock Purchase Agreement
Business Acquisition [Line Items]
Fair value of consideration transferred				$ 19,300
Business acquisition, percentage of interest acquired				97.00%
Polliwog Co. Ltd. [Member] \| Second Stock Purchase Agreement \| Forecast
Business Acquisition [Line Items]
Fair value of consideration transferred	$ 800
Business acquisition, percentage of interest acquired	3.00%
DEM Solutions Limited [Member] \| Stock Purchase Agreement
Business Acquisition [Line Items]
Fair value of consideration transferred		$ 13,100
Business acquisition, percentage of interest acquired		100.00%

Acquisitions and Disposals - Summary of Amounts of Identified Assets Acquired and Liabilities Assumed at the Acquisition Date (Detail) - USD ($) $ in Thousands	1 Months Ended
	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Recognized amounts of identifiable assets acquired and liabilities assumed:
Goodwill		$ 264,481	$ 233,683	$ 210,532
Univa [Member]
Business Acquisition [Line Items]
Fair value of consideration transferred	$ 30,184
Recognized amounts of identifiable assets acquired and liabilities assumed:
Cash	193
Accounts receivable	956
Other assets	164
Accounts payable and other liabilities	(891)
Deferred revenue	(874)
Deferred tax liabilities	(1,100)
Total net identifiable assets acquired and liabilities assumed	12,448
Goodwill	17,736
Univa [Member] \| Trade Names [Member]
Recognized amounts of identifiable assets acquired and liabilities assumed:
Indefinite-lived intangibles	200
Univa [Member] \| Developed Technology [Member]
Recognized amounts of identifiable assets acquired and liabilities assumed:
Finite-lived intangibles	9,000
Univa [Member] \| Customer Relationships [Member]
Recognized amounts of identifiable assets acquired and liabilities assumed:
Finite-lived intangibles	$ 4,800

Acquisitions and Disposals - Summary of Amounts of Identified Assets Acquired and Liabilities Assumed at the Acquisition Date (Parenthetical) (Detail) - Univa [Member]	1 Months Ended
	Sep. 30, 2020 USD ($)
Software [Member]
Business Acquisition [Line Items]
Goodwill deductible for tax purposes	$ 0
Trade Names [Member]
Business Acquisition [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	4 years
Developed Technology [Member]
Business Acquisition [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	6 years
Customer Relationships [Member]
Business Acquisition [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	7 years

Disposals WEYV - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
WEYV [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups [Line Items]
Loss before income tax	$ (3.0)	$ (4.2)

Property and Equipment, Net - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 89,601	$ 82,603
Less: accumulated depreciation and amortization	53,269	46,306
Property and equipment, net	36,332	36,297
Land [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 10,067	9,942
Property, Plant and Equipment, Estimated Useful Lives	Indefinite
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 15,630	15,512
Building and Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Building and Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	39 years
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 41,451	37,361
Computer Equipment and Software [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	3 years
Computer Equipment and Software [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Office Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 10,136	8,029
Office Furniture and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Office Furniture and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	15 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 9,652	9,014
Leasehold Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Leasehold Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	10 years
Right-of-Use Assets Under Finance Leases [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 2,665	$ 2,745
Right-of-Use Assets Under Finance Leases [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Right-of-Use Assets Under Finance Leases [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	10 years

Property and Equipment, Net - Summary of Property and Equipment (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2020
Leasehold Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Leasehold Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	10 years
Right-of-Use Assets Under Finance Leases [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Right-of-Use Assets Under Finance Leases [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	10 years

Property and Equipment, Net - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment [Abstract]
Depreciation expense, including amortization of right-of-use assets under finance leases	$ 7.4	$ 7.1	$ 7.0

Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill Attributable to Software Reportable Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning Balance	$ 233,683	$ 210,532
Acquisitions	25,932	21,922
Effects of foreign currency translation and other	4,866	1,229
Ending Balance	$ 264,481	$ 233,683

Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Summary Of Other Intangible Assets [Line Items]
Gross carrying amount	$ 119,392	$ 93,609
Accumulated amortization	54,408	37,475
Net carrying amount	64,984	56,134
Gross carrying amount	130,522	104,550
Net carrying amount	76,114	67,075
Developed Technology [Member]
Summary Of Other Intangible Assets [Line Items]
Gross carrying amount	78,841	60,916
Accumulated amortization	37,651	25,838
Net carrying amount	$ 41,190	$ 35,078
Developed Technology [Member] \| Minimum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	4 years	4 years
Developed Technology [Member] \| Maximum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	6 years	6 years
Customer Relationships [Member]
Summary Of Other Intangible Assets [Line Items]
Gross carrying amount	$ 40,207	$ 32,582
Accumulated amortization	16,673	11,575
Net carrying amount	$ 23,534	$ 21,007
Customer Relationships [Member] \| Minimum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	7 years	7 years
Customer Relationships [Member] \| Maximum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	10 years	10 years
Other Intangibles [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets		10 years
Gross carrying amount	$ 344	$ 111
Accumulated amortization	84	62
Net carrying amount	$ 260	49
Other Intangibles [Member] \| Minimum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	4 years
Other Intangibles [Member] \| Maximum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	10 years
Trade Names [Member]
Summary Of Other Intangible Assets [Line Items]
Net carrying amount	$ 11,130	$ 10,941

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 16,376	$ 14,442	$ 7,739

Goodwill and Other Intangible Assets - Summary of Estimated Amortization Expense (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
December 31, 2021	$ 17,763
December 31, 2022	14,348
December 31, 2023	15,406
December 31, 2024	8,204
December 31, 2025	4,745
Thereafter	4,518
Net carrying amount	$ 64,984	$ 56,134

Debt - Schedule of Carrying Value of Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total debt	$ 260,775	$ 231,174
Less: unamortized debt discount	37,190	46,820
Less: unamortized debt issuance costs	4,548	5,686
Current portion of long-term debt	30,384	430
Long-term debt, net of current portion	188,653	178,238
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total debt	30,000
Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Total debt	230,000	230,000
Obligations for Finance Leases [Member]
Debt Instrument [Line Items]
Total debt	$ 775	$ 1,174

Debt - Additional Information (Detail)	1 Months Ended		12 Months Ended
Debt - Additional Information (Detail)	Jan. 31, 2021 USD ($)	Jun. 30, 2019 USD ($) d $ / shares shares	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Debt Instrument [Line Items]
Debt instrument, equity component recorded in additional paid-in capital				$ 50,009,000
Repayments of borrowing outstanding				127,941,000	$ 6,091,000
Overdraft and Line of Credit [Member]
Debt Instrument [Line Items]
Loan outstanding			$ 0	0
Amount available under secured credit agreement			3,600,000	3,500,000
Convertible Senior Notes Due in 2024 [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount		$ 230,000,000.0	$ 230,000,000.0
Debt instrument interest rate		0.25%
Additional principal amount of notes to underwriters		$ 30,000,000.0
Net proceeds from issuance of costs		$ 221,900,000
Debt instrument frequency of periodic payment			semi-annually
Interest payment commencement date		Dec. 01, 2019
Debt instrument maturity date		Jun. 01, 2024
Debt instrument, description			The Convertible Notes bear interest at a rate of 0.25% per year, payable semi-annually in arrears on June 1 and December 1 of each year, commencing December 1, 2019.
Debt instrument conversion rate principal amount of notes		$ 1,000
Debt instrument, convertible, terms of conversion feature			The Convertible Notes have an initial conversion rate of 21.5049 shares of the Company's Class A common stock per $1,000 principal amount of Convertible Notes, which is equivalent to an initial conversion price of approximately $46.50 per share of its Class A common stock.
Debt instrument, convertible, “if-converted value” in excess of the principal amount			$ 57,800,000
Debt instrument, equity component recorded in additional paid-in capital			51,800,000
Debt instrument, fair value of the liability component			178,200,000
Net carrying value of equity component of convertible notes			$ 50,000,000.0	$ 50,000,000.0
Convertible Senior Notes Due in 2024 [Member] \| Class A Common Stock [Member]
Debt Instrument [Line Items]
Debt conversion, converted instrument, shares issued \| shares		21.5049
Debt instrument conversion rate principal amount of notes		$ 1,000
Debt instrument convertible initial conversion price per share of common stock \| $ / shares		$ 46.50	$ 46.50
Convertible Senior Notes Due in 2024 [Member] \| Class A Common Stock [Member] \| Convertible Notes, Holders Conversion Rights, Circumstances 1 [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, consecutive trading days \| d		30
Convertible Senior Notes Due in 2024 [Member] \| Class A Common Stock [Member] \| Convertible Notes, Holders Conversion Rights, Circumstances 1 [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, trading days \| d		20
Debt instrument, convertible, threshold percentage of conversion price		130.00%
Convertible Senior Notes Due in 2024 [Member] \| Class A Common Stock [Member] \| Convertible Notes, Holders Conversion Rights, Circumstances 2 [Member]
Debt Instrument [Line Items]
Debt instrument conversion rate principal amount of notes		$ 1,000
Debt instrument, convertible, consecutive trading days \| d		5
Debt instrument, convertible, business days \| d		5
Debt instrument, convertible, maximum threshold percentage of sale price of common stock during measurement period		98.00%
Twenty Nineteen Credit Agreement
Debt Instrument [Line Items]
Maturity date			Dec. 15, 2023
Credit facility			$ 150,000,000.0
Increase in line of credit borrowing capacity			50,000,000.0
Increase in unrestricted domestic cash			$ 20,000,000.0
Maximum leverage ratio			5.00%
Twenty Nineteen Credit Agreement \| Federal Funds Effective Swap Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.50%
Twenty Nineteen Credit Agreement \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			1.00%
Twenty Nineteen Credit Agreement \| Minimum [Member]
Debt Instrument [Line Items]
Commitment fees on unused portion of the Revolving Credit Facility			0.15%
EBITDA to cash Consolidated Interest Expense ratio			3.00%
Twenty Nineteen Credit Agreement \| Minimum [Member] \| Eurodollar Loans [Member]
Debt Instrument [Line Items]
Applicable margin for borrowings under new credit facility			1.25%
Twenty Nineteen Credit Agreement \| Minimum [Member] \| Swingline Loans [Member]
Debt Instrument [Line Items]
Applicable margin for borrowings under new credit facility			0.25%
Twenty Nineteen Credit Agreement \| Minimum [Member] \| APR Loans [Member]
Debt Instrument [Line Items]
Applicable margin for borrowings under new credit facility			0.25%
Twenty Nineteen Credit Agreement \| Maximum [Member]
Debt Instrument [Line Items]
Commitment fees on unused portion of the Revolving Credit Facility			0.30%
Senior secured leverage ratio			3.00%
Twenty Nineteen Credit Agreement \| Maximum [Member] \| Eurodollar Loans [Member]
Debt Instrument [Line Items]
Applicable margin for borrowings under new credit facility			2.00%
Twenty Nineteen Credit Agreement \| Maximum [Member] \| Swingline Loans [Member]
Debt Instrument [Line Items]
Applicable margin for borrowings under new credit facility			1.00%
Twenty Nineteen Credit Agreement \| Maximum [Member] \| APR Loans [Member]
Debt Instrument [Line Items]
Applicable margin for borrowings under new credit facility			1.00%
Secured Credit Agreement [Member]
Debt Instrument [Line Items]
Loan outstanding			$ 30,000,000.0
Amount available for future borrowing			$ 120,000,000.0
Weighted Average Interest Rate on borrowings			1.50%
Secured Credit Agreement [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Repayments of borrowing outstanding	$ 30,000,000.0

Debt - Schedule of Net Carrying Value of Liability Component of Convertible Notes (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Principal	$ 260,775	$ 231,174
Less: unamortized debt discount	37,190	46,820
Less: unamortized debt issuance costs	4,548	5,686
Convertible Senior Notes Due in 2024 [Member]
Debt Instrument [Line Items]
Principal	230,000	230,000
Less: unamortized debt discount	37,190	46,820
Less: unamortized debt issuance costs	4,510	5,686
Net carrying amount	$ 188,300	$ 177,494

Debt - Schedule of Interest Expense Related to Convertible Notes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Amortization of debt issuance cost and discount	$ 10,829	$ 5,663	$ 23
Convertible Senior Notes Due in 2024 [Member]
Debt Instrument [Line Items]
Contractual interest expense	575	313
Amortization of debt issuance cost and discount	10,806	5,635
Total	$ 11,381	$ 5,948

Leases - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Lessee Lease Description [Line Items]
Rent cost for operating leases	$ 12.1	$ 11.8	$ 11.0
Minimum [Member]
Lessee Lease Description [Line Items]
Leases, remaining lease term	1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Leases, remaining lease term	8 years 8 months 12 days
Operating leases, options to extend lease term	6 years
Leases, options to terminate leases	3 years

Leases - Schedule of Components of Lease Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 13,412	$ 13,287
Finance lease cost:
Amortization of ROU assets	634	525
Interest on lease liabilities	32	21
Total finance lease cost	$ 666	$ 546

Leases - Schedule of Supplemental Balance Sheet Information Related to Lease Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Operating leases:
Operating lease ROU assets	$ 33,526	$ 28,134
Current portion of operating lease liabilities	10,331	9,141
Operating lease liabilities, net of current portion	24,323	20,174
Total operating lease liabilities	$ 34,654	$ 29,315
Weighted average remaining lease term	4 years 2 months 12 days	4 years 2 months 12 days
Weighted average discount rate	4.70%	5.60%
Finance leases:
Property and equipment	$ 2,665	$ 2,745
Accumulated depreciation	(1,797)	(1,447)
Property and equipment, net	$ 868	$ 1,298
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentMember	us-gaap:PropertyPlantAndEquipmentMember
Current portion of long-term debt	$ 422	$ 430
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent	us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
Long-term debt, net of current portion	$ 353	$ 744
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtAndCapitalLeaseObligations	us-gaap:LongTermDebtAndCapitalLeaseObligations
Total finance lease liabilities	$ 775	$ 1,174
Weighted average remaining lease term	2 years 1 month 6 days	2 years 8 months 12 days
Weighted average discount rate	3.10%	3.50%

Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ (11,875)	$ (11,355)
Operating cash flows from finance leases	(32)	(46)
Financing cash flows from finance leases	(456)	(438)
ROU assets obtained in exchange for lease obligations:
Operating leases	11,713	11,251
Finance leases	$ 118	$ 632

Leases - Schedule of Maturities of Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
2021	$ 11,704
2022	9,408
2023	6,900
2024	4,178
2025	2,786
Thereafter	3,203
Total lease payments	38,179
Less: imputed interest	3,525
Total operating lease liabilities	$ 34,654	$ 29,315

Other Liabilities - Summary of Other Accrued Expenses and Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Liabilities Disclosure [Abstract]
Income taxes payable	$ 7,250	$ 6,008
Accrued VAT	6,604	5,312
Accrued professional fees	3,156	2,581
Accrued royalties	2,009	2,314
Obligations for acquisition of businesses	1,957	1,362
Defined contribution plan liabilities	1,660	1,593
Non-income tax liabilities	1,366	1,253
Billings in excess of cost	1,108	879
Other current liabilities	5,872	7,301
Total	$ 30,982	$ 28,603

Other Liabilities - Summary of Other Long-term Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Liabilities Disclosure [Abstract]
Pension and other post retirement liabilities	$ 14,497	$ 10,379
Deferred tax liabilities	8,028	6,275
Other liabilities	4,889	10,018
Total	$ 27,414	$ 26,672

Fair Value Measurements - Additional Information (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Fair value of convertible notes	$ 316,300,000
Foreign Exchange Contract [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivatives outstanding notional value	$ 0	$ 0

Stockholders' Equity - Additional Information (Detail)	12 Months Ended
Stockholders' Equity - Additional Information (Detail)	Dec. 31, 2020 Vote $ / shares shares	Dec. 31, 2019 $ / shares shares	Dec. 31, 2018 $ / shares
Class of Stock [Line Items]
Preferred stock, shares authorized	45,000,000	45,000,000
Preferred stock, par value \| $ / shares	$ 0.0001	$ 0.0001
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock dividends \| $ / shares	$ 0	$ 0	$ 0
Class A Common Stock [Member]
Class of Stock [Line Items]
Common stock, shares authorized	513,796,572	513,797,000
Common stock, par value \| $ / shares	$ 0.0001	$ 0.0001
Number of votes entitled per share \| Vote	1
Class B Common Stock [Member]
Class of Stock [Line Items]
Common stock, shares authorized	41,203,428	41,203,000
Common stock, par value \| $ / shares	$ 0.0001	$ 0.0001
Number of votes entitled per share \| Vote	10

Stock-based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2019 shares	Dec. 31, 2020 USD ($) Installment $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) shares	Sep. 27, 2017 shares	Dec. 31, 2012 shares	Dec. 31, 2001 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, granted				0
Stock Purchase Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Business combination, estimated post combination expense \| $		$ 8.7
Weighted average remaining service period		1 year 9 months 18 days
Stock-based compensation expense \| $		$ 2.9	$ 0.7
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total requisite service period of awards		4 years
Class A Common Stock [Member] \| Polliwog Co. Ltd. [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Business acquisition, shares issued	256,594
Business acquisition, equity interest issued or issuable, description	Stock Purchase Agreement, 256,594 shares of the Company’s Class A Common Stock will be issued to existing employees, subject to continuing employment. The shares will be issued on the one-, two- and three-year anniversaries of the closing
NSO Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, outstanding		2,533,931	3,557,436
Exercise price stock options outstanding \| $ / shares		$ 0.000025	$ 0.000025
Contractual term		35 years
Intrinsic value of options exercised \| $		$ 43.1	$ 28.8	$ 68.4
ISO Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, outstanding			103,000
Exercise price stock options outstanding \| $ / shares			$ 0.64
Contractual term		10 years
Intrinsic value of options exercised \| $		$ 3.8	$ 14.4	5.2
ISO Plan [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting period		2 years
ISO Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting period		3 years
ISO Plan [Member] \| Class A Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized							11,153,872
2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, outstanding		824,652	1,183,817
Exercise price stock options outstanding \| $ / shares		$ 4.26	$ 4.23
Contractual term		10 years
Intrinsic value of options exercised \| $		$ 13.9	$ 11.2	$ 18.0
Total requisite service period of awards		4 years
Compensation cost related to nonvested awards not yet recognized \| $		$ 0.1
Weighted average period of recognition		4 months 24 days
Stock options, granted		0
2012 Plan [Member] \| Class A Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized						5,200,000
2017 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, outstanding		4,203,482	20,000
Exercise price stock options outstanding \| $ / shares		$ 45.68	$ 38.11
Stock options, granted		4,209,454
2017 Plan [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost related to nonvested awards not yet recognized \| $		$ 90.9
Weighted average period of recognition		2 years 8 months 12 days
Weighted average grant date fair value of RSUs \| $ / shares		$ 32.22
Number of vesting equal annual installments \| Installment		4
Fair value of RSUs vested \| $		$ 6.7
2017 Plan [Member] \| Class A Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance					10,277,034

Stock-based Compensation - Summary of Stock Option Activity under NSO Plan (Detail) - NSO Plan [Member] - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options, Outstanding, Beginning Balance	3,557,436
Number of options, Exercised	(1,023,505)
Number of options, Forfeited	0
Number of options, Outstanding and exercisable, Ending Balance	2,533,931
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price per share, Outstanding, Beginning Balance	$ 0.000025
Weighted average exercise price per share, Exercised	0.000025
Weighted average exercise price per share, Forfeited	0
Weighted average exercise price per share, Outstanding and exercisable, Ending Balance	$ 0.000025
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual term (years), Outstanding		17 years
Weighted average remaining contractual term (years), Outstanding and exercisable	16 years
Aggregate intrinsic value, Outstanding		$ 127.8
Aggregate intrinsic value, Outstanding and exercisable	$ 147.4

Stock-based Compensation - Summary of Stock Option Activity under ISO Plan (Detail) - ISO Plan [Member] - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options, Outstanding, Beginning Balance	103,000
Number of options, Exercised	(103,000)
Number of options, Forfeited	0
Number of options, Outstanding and exercisable, Ending Balance	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price per share, Outstanding, Beginning Balance	$ 0.64
Weighted average exercise price per share, Exercised	0.64
Weighted average exercise price per share, Forfeited	0
Weighted average exercise price per share, Outstanding and exercisable, Ending Balance	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual term (years), Outstanding		1 year
Aggregate intrinsic value, Outstanding		$ 3.6

Stock-based Compensation - Summary of Stock Option Activity under 2012 Plan (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options, Granted			0
2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options, Outstanding, Beginning Balance	1,183,817
Number of options, Granted	0
Number of options, Exercised	(351,165)
Number of options, Forfeited	(8,000)
Number of options, Outstanding, Ending Balance	824,652	1,183,817
Number of options, Exercisable	691,362
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price per share, Outstanding, Beginning Balance	$ 4.23
Weighted average exercise price per share, Granted	0
Weighted average exercise price per share, Exercised	4.18
Weighted average exercise price per share, Forfeited	4.31
Weighted average exercise price per share, Outstanding, Ending Balance	4.26	$ 4.23
Weighted average exercise price per share, Exercisable	$ 4.08
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual term (years), Outstanding	5 years 1 month 6 days	6 years 1 month 6 days
Weighted average remaining contractual term (years), Exercisable	4 years 9 months 18 days
Aggregate intrinsic value, Exercisable	$ 37.4

Stock-based Compensation - Summary of Restricted Stock Units Awarded (Detail) - 2017 Plan [Member] - Restricted Stock Units (RSUs) [Member]	12 Months Ended
	Dec. 31, 2020 shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of RSUs, Outstanding Beginning Balance	781,301
Number of RSUs, Granted	641,723
Number of RSUs, Vested	(222,716)
Number of RSUs, Forfeited	(45,372)
Number of RSUs, Outstanding Ending Balance	1,154,936

Stock-based Compensation - Summary of Stock Option Activity under 2017 Plan (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options, Granted			0
2017 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options, Outstanding, Beginning Balance	20,000
Number of options, Granted	4,209,454
Number of options, Exercised	(5,000)
Number of options, Forfeited	(20,972)
Number of options, Outstanding, Ending Balance	4,203,482	20,000
Number of options, Exercisable	158
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price per share, Outstanding, Beginning Balance	$ 38.11
Weighted average exercise price per share, Granted	45.68
Weighted average exercise price per share, Exercised	38.11
Weighted average exercise price per share, Forfeited	40.80
Weighted average exercise price per share, Outstanding, Ending Balance	45.68	$ 38.11
Weighted average exercise price per share, Exercisable	$ 29.22
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual term (years), Outstanding	9 years 8 months 12 days	9 years 2 months 12 days
Weighted average remaining contractual term (years), Exercisable	2 months 12 days

Stock-based Compensation - Summary of Fair value of Company's Stock Options Granted (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value per share		$ 38.11
Expected volatility		42.00%
Expected volatility, minimum	34.00%
Expected volatility, maximum	35.00%
Expected term (in years)	6 years 3 months	6 years 3 months
Risk-free interest rate		1.80%
Risk-free interest rate, minimum	0.46%
Risk-free interest rate, maximum	0.60%
Expected dividend yield	0.00%	0.00%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value per share	$ 29.22
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value per share	$ 57.72

Stock-based Compensation - Summary of Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 21,355	$ 8,528	$ 3,339
Cost of Revenue - Software [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	2,473	1,069	31
Research and development [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	8,372	2,917	740
Sales and marketing [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	6,423	2,250	910
General and administrative [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 4,087	$ 2,292	$ 1,658

Income Taxes - Components of Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S	$ (22,127)	$ (14,732)	$ 4,228
Non-U.S	24,159	18,120	22,796
Income before income taxes	$ 2,032	$ 3,388	$ 27,024

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details

Income Taxes - Significant Components of Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current
U.S. Federal	$ 0	$ 0	$ 2
Non-U.S.	23,197	11,434	12,629
U.S. State and Local	(315)	446	(16)
Total current	22,882	11,880	12,615
Deferred
U.S. Federal	(881)	193	1,714
Non-U.S.	(9,849)	(1,143)	(2,823)
U.S. State and Local	380		(17)
Total deferred	(10,350)	(950)	(1,126)
Income tax expense	$ 12,532	$ 10,930	$ 11,489

Income Taxes - Reconciliation of Income Taxes Calculated at U.S. Federal Statutory Income Tax Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	21.00%	21.00%	21.00%	35.00%
Income taxes at U.S. federal statutory rate	$ 427	$ 711	$ 5,675
Foreign income taxes at rates other than the federal statutory rate	1,161	1,247	2,179
U.S. state and local income taxes, net of U.S. federal tax benefit	(4,892)	(6,836)	(3,453)
U.S. effect of changes in tax laws	4,946
U.S. effect of foreign operations	1,205	8,609
Change in valuation allowance	5,215	18,138	21,544
Foreign withholding taxes	6,691	5,975	5,103
U.S. foreign tax credit and deduction	(1,308)	(7,059)	(5,648)
Research and development tax credit	2,576	(2,600)	(2,819)
Stock-based compensation	(5,001)	(4,574)	(14,964)
Meals & entertainment	77	246	181
Other	640	(1,068)	1,206
Uncertain tax positions	720	(1,859)	903
Acquisition costs	75		503
Tax law changes			1,079
Income tax expense	$ 12,532	$ 10,930	$ 11,489

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Tax cuts and jobs act, foreign income exemption criteria subject to corporate tax rate minimum percentage		90.00%
U.S. Federal statutory income tax rate		21.00%	21.00%	21.00%	35.00%
Tax cuts and job act, transition tax liability, net of foreign tax credits					$ 4,200
Tax cuts and job act, additional transition tax liability, net of foreign tax credits				$ 600
Tax benefit		$ (12,532)	$ (10,930)	(11,489)
Offset by increase in valuation allowance recorded for business combinations				12,600
Gross unrecognized tax benefits recognized would affect the effective tax rate		3,500
Scenario Forecast [Member]
Income Tax Disclosure [Line Items]
Reduction in unrecognized tax benefits which if recognized would impact effective tax rate in next 12 months	$ 400
Decrease in Valuation Allowance [Member]
Income Tax Disclosure [Line Items]
Valuation allowance in other				200
ASC 606 [Member]
Income Tax Disclosure [Line Items]
Valuation allowance in other				12,600
Other Comprehensive Income [Member]
Income Tax Disclosure [Line Items]
Tax benefit				$ 200
Issuance of Convertible Debt [Member]
Income Tax Disclosure [Line Items]
Valuation allowance in other			$ 11,900
Univa [Member]
Income Tax Disclosure [Line Items]
Valuation allowance in other		$ 7,300

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Deferred revenue	$ 12,135	$ 11,408
Net operating loss carryforwards	66,160	38,745
Tax credit carryforwards	26,299	38,981
Stock-based compensation	3,766	6,480
Capitalized research and development	6,472	7,162
Lease obligation	9,956	7,579
Employee benefits	5,980	5,189
Other	2,618	1,968
Total gross deferred tax assets	133,386	117,512
Less: valuation allowances	(96,831)	(84,356)
Net deferred tax assets	36,555	33,156
Deferred tax liabilities:
Prepaid royalties	584
Property and equipment and intangibles	16,177	13,588
Deferred tax on investment in subsidiary	790	474
Lease right of use asset	9,610	7,247
Convertible debt, net of issuance costs	8,685	10,899
Other	1,612	1,432
Total deferred tax liabilities	37,458	33,640
Total net deferred tax (liabilities) assets	$ (903)	$ (484)

Income Taxes - Summary of Changes to Valuation Allowance Balance (Detail) - Valuation Allowance of Deferred Tax Assets [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Valuation Allowance [Line Items]
Balance at beginning of year	$ 84,356	$ 78,155	$ 56,761
Additions charged to expense	5,215	18,138	21,544
Other	7,260	(11,937)	(150)
Balance at end of year	$ 96,831	$ 84,356	$ 78,155

Income Taxes - Operating Loss and Tax Credit Carryforwards (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Operating Loss and Tax Credit Carryforward [Line Items]
Foreign loss carryforwards, expiration year	Indefinite
U.S. foreign tax credits, expiration year	2027
U.S. foreign tax credits	$ 2,878
Total operating loss and tax credit carryforwards	92,459
Foreign Tax Authority [Member]
Operating Loss and Tax Credit Carryforward [Line Items]
Foreign loss carryforwards	$ 9,990
General Business Tax Credit Carryforward [Member]
Operating Loss and Tax Credit Carryforward [Line Items]
U.S. general business credits and loss carryforwards, expiration year	2021-Indefinite
Foreign loss carryforwards	$ 79,591

Income Taxes - Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Unrecognized tax benefits-January 1	$ 15,540	$ 17,097	$ 6,157
Additions for tax positions of current period	310		234
Additions for tax positions of current period		(203)
Additions for tax positions of prior periods	1,890	642	10,866
Reductions for tax positions of prior periods	(8,816)	(1,834)	(100)
Reductions due to statute of limitations		(162)	(60)
Unrecognized tax benefits—December 31	$ 8,924	$ 15,540	$ 17,097

Net (Loss) Income Per Share - Computation of Numerators and Denominators Used in Basic and Diluted Net (Loss) Income Per Share Amounts (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net (loss) income	$ (10,500)	$ (7,542)	$ 15,535
Denominator:
Denominator for basic (loss) income per share— weighted average shares	73,241	71,544	67,468
Effect of dilutive securities, stock options and RSUs			7,410
Denominator for dilutive (loss) income per share	73,241	71,544	74,878
Net (loss) income per share attributable to common stockholders, basic	$ (0.14)	$ (0.11)	$ 0.23
Net (loss) income per share attributable to common stockholders, diluted	$ (0.14)	$ (0.11)	$ 0.21

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Net (Loss) Income Per Share - Additional Information (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019
Earnings Per Share Basic [Line Items]
Anti-dilutive shares excluded from computation of net (loss) income per share	3,100,000	5,700,000	0
Class A Common Stock [Member] \| Convertible Senior Notes Due in 2024 [Member]
Earnings Per Share Basic [Line Items]
Debt instrument convertible initial conversion price per share of common stock	$ 46.50			$ 46.50

Retirement Benefits - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Funded percentage	80.00%
Defined Benefit Plan, Contributions by Employer	$ 1,600	$ 1,600	$ 1,300
Net benefit cost	2,700	1,800	1,200
Benefit obligation benefits paid	500	400	$ 400
Accumulated benefit obligation	8,700	6,800
Defined benefit plan, benefit obligation	$ 15,154	$ 10,975

Retirement Benefits - Schedule of Pension Benefits Obligation (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Pension Plan [Abstract]
Accrued compensation and benefits	$ 657	$ 596
Other long-term liabilities	14,497	10,379
Components of pension benefits	$ 15,154	$ 10,975

Retirement Benefits - Schedule of Estimated Future Benefit Payments (Detail) $ in Thousands	Dec. 31, 2020 USD ($)
Defined Benefit Plan Estimated Future Benefit Payments [Abstract]
December 31, 2021	$ 677
December 31, 2022	480
December 31, 2023	624
December 31, 2024	662
December 31, 2025	577
Next five years	$ 4,772

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 354,707	$ 293,686	$ 58,948
Other comprehensive income (loss) before reclassification	7,281	1,957	(5,359)
Amounts reclassified from accumulated other comprehensive loss	(858)	(179)	(1,177)
Tax effects	308	(16)	318
Total other comprehensive income (loss)	6,731	1,762	(6,218)
Ending balance	378,586	354,707	293,686
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(6,928)	(8,823)	(3,374)
Other comprehensive income (loss) before reclassification	7,782	1,895	(5,449)
Total other comprehensive income (loss)	7,782	1,895	(5,449)
Ending balance	854	(6,928)	(8,823)
Retirement Related Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(2,600)	(2,467)	(1,698)
Other comprehensive income (loss) before reclassification	(501)	62	90
Amounts reclassified from accumulated other comprehensive loss	(858)	(179)	(1,177)
Tax effects	308	(16)	318
Total other comprehensive income (loss)	(1,051)	(133)	(769)
Ending balance	(3,651)	(2,600)	(2,467)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(9,528)	(11,290)	(5,072)
Ending balance	$ (2,797)	$ (9,528)	$ (11,290)

- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

+ References

+ Details

- Definition

Amount of tax expense (benefit) allocated to other comprehensive income (loss).

+ References

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-Name Accounting Standards Codification
-Topic 942
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(23))
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 944
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(19))
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+ Details

- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

+ References + Details

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2013
Software and Other [Member]
Loss Contingencies [Line Items]
Royalty fees	$ 10.4	$ 10.6	$ 9.7
Datawatch Corporation [Member] \| Panopticon AB [Member] \| Swedish Tax Authorities [Member]
Loss Contingencies [Line Items]
Tax assessment, penalties and interest amount related to acquisition				$ 6.2

Commitments and Contingencies - Future Purchase Obligations (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Commitments And Contingencies Disclosure [Abstract]
2021	$ 6,436
2022	6,884
2023	6,509
2024	3,560
2025	3,307
Total	$ 26,696

Segment Information - Additional Information (Detail)	12 Months Ended
Segment Information - Additional Information (Detail)	Dec. 31, 2020 Segment Customer	Dec. 31, 2019 Customer	Dec. 31, 2018 Customer
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment	2
Number of individual customer accounted for 10% or more of revenue \| Customer	0	0	0
Product Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Automotive Industry [Member]
Segment Reporting Information [Line Items]
Concentration of credit risk, percentage	36.00%	40.00%	45.00%

Segment Information - Schedule of Segment Reporting Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Revenue	$ 469,921	$ 458,915	$ 396,379
Adjusted EBITDA	57,288	39,549	50,180
Software [Member]
Segment Reporting Information [Line Items]
Revenue	418,165	401,278	341,306
Adjusted EBITDA	53,820	38,834	48,643
CES [Member]
Segment Reporting Information [Line Items]
Revenue	44,320	48,987	47,852
Adjusted EBITDA	5,129	5,255	5,155
All Other [Member]
Segment Reporting Information [Line Items]
Revenue	7,436	8,650	7,221
Adjusted EBITDA	$ (1,661)	$ (4,540)	$ (3,618)

- Definition

+ References

+ Details

Segment Information - Reconciliation of U.S. GAAP Income (Loss) Before Income Taxes to Adjusted EBITDA (Detail) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2020

Dec. 31, 2019

Dec. 31, 2018

Segment Reporting [Abstract]

Adjusted EBITDA

$ 57,288

$ 39,549

$ 50,180

Stock-based compensation expense

(21,355)

(8,528)

(3,339)

Interest expense

(11,598)

(6,371)

(200)

Interest income and other

^[1]

1,503

260

(4,883)

Depreciation and amortization

(23,806)

(21,522)

(14,734)

Income before income taxes

$ 2,032

$ 3,388

$ 27,024

[1]

- Definition

+ References

+ Details

Segment Information - Reconciliation of U.S. GAAP Income (Loss) Before Income Taxes to Adjusted EBITDA (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Proceeds from settlements related to historical acquisition	$ 1.0
Severance expense	$ 0.6	$ 0.4
Acquisition related costs		0.6
Impairment charge recognized in adjustment for royalty contracts		$ 1.0
Impairment charge recognized in adjustment for royalty contracts and trade names			$ 2.8
Income recognized in adjustment for change in estimated legal expenses			2.0
Building [Member]
Segment Reporting Information [Line Items]
Gain on sale of building			4.4
Datawatch Corporation [Member]
Segment Reporting Information [Line Items]
Costs from acquisition			$ 10.4

Segment Information - Summary of Sales to External Customers and Long-Lived Assets by Geographical Areas (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 469,921	$ 458,915	$ 396,379
Long-lived assets	101,316	92,431
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	233,611	219,053	186,026
Long-lived assets	60,479	55,319
Other American Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	12,127	14,753	8,604
Long-lived assets	8,378	10,190
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	245,738	233,806	194,630
Long-lived assets	68,857	65,509
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	48,559	50,102	45,664
Long-lived assets	9,201	3,405
France [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	15,287	17,210	16,154
Long-lived assets	1,078	1,224
Other Europe, Middle East and Africa Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	49,403	49,312	42,846
Long-lived assets	11,730	11,316
Europe Middle East And Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	113,249	116,624	104,664
Long-lived assets	22,009	15,945
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	41,109	37,757	35,478
Long-lived assets	2,009	2,036
Other Asia Pacific Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	69,825	70,728	61,607
Long-lived assets	8,441	8,941
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	110,934	108,485	$ 97,085
Long-lived assets	$ 10,450	$ 10,977