National Instruments (NATI) 10-Q 4 Aug 20 2020 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jun. 30, 2020	Jul. 30, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	0-25426
Entity Registrant Name	NATIONAL INSTRUMENTS CORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	74-1871327
Entity Address, Address Line One	11500 North MoPac Expressway
Entity Address, City or Town	Austin,
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	78759
City Area Code	512
Local Phone Number	683-0100
Trading Symbol	NATI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock, $0.01 par value
Entity Common Stock, Shares Outstanding		131,436,108
Entity Central Index Key	0000935494
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 471,205	$ 194,616
Short-term investments	137,104	237,983
Accounts receivable, net	211,766	248,872
Inventories, net	209,928	200,410
Prepaid expenses and other current assets	65,817	65,477
Total current assets	1,095,820	947,358
Property and equipment, net	247,548	243,717
Goodwill	255,153	262,242
Intangible assets, net	68,975	84,083
Operating lease right-of-use assets	63,895	70,407
Restricted cash	70,000	0
Other long-term assets	48,424	44,082
Total assets	1,849,815	1,651,889
Current liabilities:
Accounts payable and accrued expenses	53,247	52,192
Accrued compensation	44,431	47,732
Deferred revenue - current	113,785	131,445
Operating lease liabilities - current	13,583	13,431
Other taxes payable	39,477	40,607
Debt, current	3,500	0
Other current liabilities	66,818	20,716
Total current liabilities	334,841	306,123
Deferred income taxes	16,258	14,065
Income tax payable - non-current	61,628	69,151
Liability for uncertain tax positions	6,808	6,652
Deferred revenue - non-current	32,468	33,480
Operating lease liabilities - non-current	34,655	40,650
Debt, non-current	85,020	0
Other long-term liabilities	8,498	5,418
Total liabilities	580,176	475,539
Commitments and contingencies
Stockholders' equity:
Preferred stock:  par value $0.01;  5,000,000 shares authorized; none issued and outstanding	0	0
Common Stock, Value, Issued	1,314	1,305
Additional paid-in capital	993,058	953,578
Retained earnings	299,132	242,537
Accumulated other comprehensive loss	(23,865)	(21,070)
Total stockholders’ equity	1,269,639	1,176,350
Total liabilities and stockholders’ equity	$ 1,849,815	$ 1,651,889

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Common stock, authorized (in shares)	360,000,000	360,000,000
Preferred stock, par value per share (in usd per share)	$ 0.01	$ 0.01
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value per share (in usd per share)	$ 0.01	$ 0.01
Common stock, issued (in shares)	131,436,108	130,504,535
Common stock, outstanding (in shares)	131,436,108	130,504,535

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net sales:
Total net sales	$ 301,329	$ 334,231	$ 610,709	$ 645,305
Cost of sales:
Total cost of sales	85,901	83,766	169,662	159,841
Gross profit	215,428	250,465	441,047	485,464
Operating expenses:
Sales and marketing	105,419	120,868	221,165	238,419
Research and development	64,225	68,257	135,846	134,423
General and administrative	29,369	29,044	55,549	56,927
Total operating expenses	199,013	218,169	412,560	429,769
Gain on sale of business	0	0	159,753	0
Operating income	16,415	32,296	188,240	55,695
Other Nonoperating Income (Expense) [Abstract]
Other (expense) income	(1,143)	555	(583)	3,131
Income before income taxes	15,272	32,851	187,657	58,826
Provision for income taxes	4,383	4,159	44,113	6,914
Net income	$ 10,889	$ 28,692	$ 143,544	$ 51,912
Basic earnings per share (in dollars per share)	$ 0.08	$ 0.22	$ 1.10	$ 0.39
Weighted average shares outstanding - basic (in shares)	131,014	132,062	130,813	132,156
Diluted earnings per share (in dollars per share)	$ 0.08	$ 0.22	$ 1.09	$ 0.39
Weighted average shares outstanding - diluted (in shares)	131,602	132,973	131,499	133,172
Dividends declared per share (in dollars per share)	$ 0.26	$ 0.25	$ 0.52	$ 0.50
Product
Net sales:
Total net sales	$ 266,261	$ 299,798	$ 540,239	$ 577,500
Cost of sales:
Total cost of sales	83,795	81,741	165,866	155,929
Software maintenance
Net sales:
Total net sales	35,068	34,433	70,470	67,805
Cost of sales:
Total cost of sales	$ 2,106	$ 2,025	$ 3,796	$ 3,912

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 10,889	$ 28,692	$ 143,544	$ 51,912
Other comprehensive income (loss), before tax and net of reclassification adjustments:
Foreign currency translation adjustment	3,938	2,265	(1,975)	(802)
Unrealized gain (loss) on securities available-for-sale	2,634	738	(154)	1,913
Unrealized loss on derivative instruments	(74)	(1,480)	(598)	(268)
Other comprehensive income (loss), before tax	6,498	1,523	(2,727)	843
Tax (benefit) expense related to items of other comprehensive income	(56)	(268)	68	(58)
Other comprehensive income (loss), net of tax	6,554	1,791	(2,795)	901
Comprehensive income	$ 17,443	$ 30,483	$ 140,749	$ 52,813

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flow from operating activities:
Net income	$ 143,544,000	$ 51,912,000
Adjustments to reconcile net income to net cash provided by operating activities:
Disposal gain on sale of business	(159,753,000)	0
Depreciation and amortization	38,341,000	35,984,000
Stock-based compensation	27,335,000	24,662,000
Deferred income taxes	2,711,000	2,268,000
Changes in operating assets and liabilities	49,320,000	(26,189,000)
Net cash provided by operating activities	101,498,000	88,637,000
Cash flow from investing activities:
Capital expenditures	(25,362,000)	(26,048,000)
Proceeds from sale of business, net of cash divested	160,266,000	0
Capitalization of internally developed software	(3,108,000)	(4,497,000)
Additions to other intangibles	(630,000)	(487,000)
Acquisitions of equity-method investments	0	(9,784,000)
Purchases of short-term investments	(206,330,000)	(91,777,000)
Sales and maturities of short-term investments	306,955,000	117,108,000
Net cash provided by (used in) investing activities	231,791,000	(15,485,000)
Cash flow from financing activities:
Proceeds from revolving line of credit	20,000,000	0
Proceeds from issuance of secured debt	70,000,000	0
Debt issuance costs	(1,480,000)	0
Proceeds from issuance of common stock	17,252,000	17,645,000
Repurchase of common stock	(23,680,000)	(92,375,000)
Dividends paid	(68,156,000)	(66,067,000)
Net cash provided by (used in) financing activities	13,936,000	(140,797,000)
Effect of exchange rate changes on cash	(636,000)	20,000
Net change in cash, cash equivalents and restricted cash	346,589,000	(67,625,000)
Cash, cash equivalents and restricted cash at beginning of period	194,616,000	259,386,000
Cash, cash equivalents and restricted cash at end of period	$ 541,205,000	$ 191,761,000

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands		Total	Common Stock	Additional-Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)
Beginning Balance (in shares) at Dec. 31, 2018			132,655,941
Beginning Balance at Dec. 31, 2018		$ 1,238,358	$ 1,327	$ 897,544	$ 356,418	$ (16,931)
Net income		51,912			51,912
Other comprehensive income (loss), net of tax		901				901
Issuance of common stock under employee plans (in shares)			1,378,432
Issuance of common stock under employee plans, including tax benefits		17,645	$ 14	17,631
Stock-based compensation		24,200		24,200
Repurchase of common stock (in shares)			(2,149,598)
Repurchase of common stock		(92,375)	$ (22)	(14,574)	(77,779)
Dividends paid	[1]	(66,067)			(66,067)
Ending Balance (in shares) at Jun. 30, 2019			131,884,775
Ending Balance at Jun. 30, 2019		1,174,574	$ 1,319	924,801	264,484	(16,030)
Beginning Balance (in shares) at Mar. 31, 2019			131,866,173
Beginning Balance at Mar. 31, 2019		1,201,253	$ 1,319	910,602	307,153	(17,821)
Net income		28,692			28,692
Other comprehensive income (loss), net of tax		1,791				1,791
Issuance of common stock under employee plans (in shares)			1,133,102
Issuance of common stock under employee plans, including tax benefits		8,431	$ 11	8,420
Stock-based compensation		13,335		13,335
Repurchase of common stock (in shares)			(1,114,500)
Repurchase of common stock		(45,971)	$ (11)	(7,556)	(38,404)
Dividends paid	[1]	(32,957)			(32,957)
Ending Balance (in shares) at Jun. 30, 2019			131,884,775
Ending Balance at Jun. 30, 2019		$ 1,174,574	$ 1,319	924,801	264,484	(16,030)
Beginning Balance (in shares) at Dec. 31, 2019		130,504,535	130,504,535
Beginning Balance at Dec. 31, 2019		$ 1,176,350	$ 1,305	953,578	242,537	(21,070)
Net income		143,544			143,544
Other comprehensive income (loss), net of tax		(2,795)				(2,795)
Issuance of common stock under employee plans (in shares)			1,599,772
Issuance of common stock under employee plans, including tax benefits		17,252	$ 16	17,236
Stock-based compensation		27,124		27,124
Repurchase of common stock (in shares)			(668,199)
Repurchase of common stock		(23,680)	$ (7)	(4,880)	(18,793)
Dividends paid	[1]	$ (68,156)			(68,156)
Ending Balance (in shares) at Jun. 30, 2020		131,436,108	131,436,108
Ending Balance at Jun. 30, 2020		$ 1,269,639	$ 1,314	993,058	299,132	(23,865)
Beginning Balance (in shares) at Mar. 31, 2020			130,595,203
Beginning Balance at Mar. 31, 2020		1,280,117	$ 1,306	973,354	335,876	(30,419)
Net income		10,889			10,889
Other comprehensive income (loss), net of tax		6,554				6,554
Issuance of common stock under employee plans (in shares)			1,344,231
Issuance of common stock under employee plans, including tax benefits		8,261	$ 13	8,248
Stock-based compensation		15,130		15,130
Repurchase of common stock (in shares)			(503,326)
Repurchase of common stock		(17,153)	$ (5)	(3,674)	(13,474)
Dividends paid	[1]	$ (34,159)			(34,159)
Ending Balance (in shares) at Jun. 30, 2020		131,436,108	131,436,108
Ending Balance at Jun. 30, 2020		$ 1,269,639	$ 1,314	$ 993,058	$ 299,132	$ (23,865)
[1]	Cash dividends declared per share of common stock were $0.25 for the three months ended June 30, 2019, and $0.50 for the six months ended June 30, 2019.

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Stockholders' Equity [Abstract]
Dividends declared per share (in dollars per share)	$ 0.26	$ 0.25	$ 0.52	$ 0.50

Basis of presentation

Basis of presentation	6 Months Ended
	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of presentation	Basis of presentation The accompanying unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto for the fiscal year ended December 31, 2019, included in our Annual Report on Form 10-K filed with the Securities and Exchange Commission ("SEC") on February 20, 2020 (the "Form 10-K"). In our opinion, the accompanying consolidated financial statements reflect all adjustments (consisting only of normal recurring items) considered necessary to present fairly our financial position at June 30, 2020 and December 31, 2019, the results of our operations and comprehensive income for three and six months ended June 30, 2020 and 2019, our cash flows for the six months ended June 30, 2020 and 2019 and our statement of stockholders' equity for the three and six months ended June 30, 2020 and 2019. Our operating results for the three and six months ended June 30, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020. These financial statements have been prepared in accordance with accounting principles generally accepted in the United States. Reclassifications As discussed below, certain prior period amounts have been reclassified to conform to the current period presentation. The reclassifications had no impact on our previously reported net income or cash flows: • We previously included net sales attributable to our operations in India within the EMEIA region in Note 2 - Revenue of Notes to Consolidated Financial Statements. In the second quarter of 2020, we began including these amounts within the APAC (Australia, India, New Zealand, Southeast Asia, China, South Korea and Japan) geographic region, to reflect recent changes within our organizational structure. We have recast historical comparative information to conform to the June 30, 2020 presentation. Refer to Note 2 - Revenue of Notes to Consolidated Financial Statements for our revenue disaggregated by geographic region which now include the Americas (United States, Canada and Latin America), EMEA (Europe, Middle East, and Africa) and APAC. • We previously presented “Interest income”, "Net foreign exchange gain (loss)", and "Other income (loss)" separately on the consolidated statements of income. In the second quarter of 2020, we began presenting these amounts within “Other (expense) income” in the consolidated statements of income for all periods presented. Refer to "Other (expense) income" in Note 1 - Basis of Presentation of Notes to Consolidated Financial Statements for additional information on the amounts that comprise "Other (expense) income". Recently Adopted Accounting Pronouncements Current Expected Credit Losses ("CECL") In June 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-13, "Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments." The ASU replaces the incurred-loss impairment methodology and requires immediate recognition of estimated credit losses expected to occur for most financial assets, including trade receivables. Credit losses on available-for-sale debt securities with unrealized losses will be recognized as allowances for credit losses limited to the amount by which fair value is below amortized cost. We adopted the new standard on January 1, 2020 and the impact of the adoption was not material to our consolidated financial statements as credit losses are not expected to be significant based on historical collection trends, the financial condition of payment partners, and external market factors. We will continue to actively monitor the impact of the recent coronavirus (COVID-19) pandemic on expected credit losses. Implementation Costs Incurred in a Cloud Computing Arrangement In August 2018, the FASB issued ASU 2018-15, “Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract,” which clarifies the accounting for implementation costs in cloud computing arrangements. The new standard aligns the treatment of implementation costs incurred by customers in cloud computing arrangements that are service contracts with the treatment of similar costs incurred to develop or obtain internal-use software. Under the new standard, implementation costs are deferred and presented in the same financial statement caption on the condensed consolidated balance sheet as a prepayment of related arrangement fees. The deferred costs are recognized over the term of the arrangement in the same financial statement caption in the condensed consolidated income statement as the related fees of the arrangement. We adopted the new standard on January 1, 2020. The new standard did not have a material impact on our consolidated financial statements and related disclosures. Fair Value Measurements In August 2018, the FASB issued ASU 2018-13, “Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement,” which modifies the disclosure requirements on fair value measurements. We adopted the new standard on January 1, 2020. The new standard did not have a material impact on our consolidated financial statements and related disclosures. Income Taxes In December 2019, the FASB issued ASU 2019-12, “Income Taxes — Simplifying the Accounting for Income Taxes (Topic 740),” which simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The amendments in this ASU also improve consistency and simplify other areas of Topic 740 by clarifying and amending existing guidance. The amendments in this ASU will be applied using different approaches depending on what the specific amendment relates to and, for public entities, are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. An entity is permitted to early adopt the guidance, and we early adopted ASU 2019-12 as of January 1, 2020. The adoption did not have a material impact on our consolidated financial statements and related disclosures. Disclosures about Acquired and Disposed Businesses In May 2020, the SEC adopted Release No. 33-10786 "Amendments to Financial Disclosures about Acquired and Disposed Businesses" ("Release No. 33-10786") which includes amendments to certain of its rules and forms related to the disclosure of financial information regarding acquired or disposed businesses. Among other changes, the amendments impact SEC rules relating to (1) the definition of “significant” subsidiaries, (2) requirements to provide financial statements for “significant” acquisitions, and (3) revisions to the formulation and usage of pro forma financial information. Release No. 33-10786 is effective on January 1, 2021, however, voluntary early adoption is permitted as long as all amendments are adopted in their entirety. We elected to early adopt all provisions of Release No. 33-10786 during the second quarter of 2020. Summary of Significant Accounting Policies As discussed above, we adopted the new expected credit loss standard as of January 1, 2020. There were no other significant changes in our accounting policies during the three and six months ended June 30, 2020 compared to the significant accounting policies described in our Form 10-K. Divestitures AWR On January 15, 2020, we completed the sale of our AWR Corporation subsidiary ("AWR") for approximately $161 million. We recognized a gain of approximately $160 million on the sale. The gain is included within "Gain on sale of business" in the consolidated statements of income, which also included approximately $1 million of transaction costs. The divestiture of AWR resulted in the derecognition of the following assets and liabilities (in thousands): Cash $ 1,027 Accounts receivable, net 7,233 Prepaid and other current assets 283 Goodwill 7,221 Other non-current assets 556 Total Assets 16,320 Deferred revenue 15,296 Other current liabilities 940 Cumulative translation adjustment (660) Total liabilities and stockholders' equity 15,576 Total assets divested, net (including cash) $ 744 Other (Expense) Income Other (expense) income, net consisted of the following amounts (in thousands): Three Months Ended June 30, Six Months Ended June 30, (Unaudited) (Unaudited) 2020 2019 2020 2019 Interest Income $ 1,011 $ 2,023 $ 3,310 $ 4,257 Net foreign currency loss (838) (1,611) (1,343) (1,245) Other (1,316) 143 (2,550) 119 Other (expense) income, net $ (1,143) $ 555 $ (583) $ 3,131 Earnings Per Share Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of common shares outstanding during each period. Diluted EPS is computed by dividing net income by the weighted average number of common shares and common share equivalents outstanding (if dilutive) during each period. The number of common share equivalents, which includes restricted stock units ("RSUs"), is computed using the treasury stock method. The reconciliation of the denominators used to calculate basic EPS and diluted EPS for the three and six months ended June 30, 2020 and 2019, are as follows:  Three Months Ended June 30, Six Months Ended June 30,  (In thousands) (In thousands)  (Unaudited) (Unaudited)  2020 2019 2020 2019 Weighted average shares outstanding-basic 131,014 132,062 130,813 132,156 Plus: Common share equivalents RSUs 588 911 686 1,016 Weighted average shares outstanding-diluted 131,602 132,973 131,499 133,172 Stock awards to acquire 1,206,000 shares and 861,000 shares for the three months ended June 30, 2020 and 2019, respectively, and 249,000 shares and 395,800 shares for the six months ended June 30, 2020 and 2019, respectively, were excluded in the computations of diluted EPS because the effect of including the stock awards would have been anti-dilutive. Other Current Liabilities Other current liabilities on our consolidated balance sheet includes the following amounts (in thousands): As of June 30, 2020 As of December 31, (unaudited) 2019 Income taxes payable - current $ 46,480 $ 6,791 Other 20,338 13,925 Total $ 66,818 $ 20,716

Revenue

Revenue	6 Months Ended
	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Revenue	Revenue Revenue Recognition Revenue is recognized upon transfer of control of the promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. We enter into contracts that can include various combinations of our products or services, which are generally capable of being distinct and accounted for as separate performance obligations. Revenue is recognized net of allowances for returns and any taxes collected from customers, which are subsequently remitted to governmental authorities. Disaggregation of Revenues We disaggregate revenue from contracts with customers based on the timing of transfer of goods or services to customers (point-in-time or over time) and geographic region based on the billing location of the customer. We previously included net sales attributable to our operations in India within the EMEIA region. In the second quarter of 2020, we began including these amounts within the APAC geographic region, to reflect recent changes within our organizational structure. We have recast historical comparative information to conform to the June 30, 2020 presentation. The geographic regions are now presented as the Americas, EMEA and APAC to reflect this change. Total net sales based on the disaggregation criteria described above are as follows:  Three Months Ended June 30, (In thousands) (Unaudited)  2020 2019 Net sales: Point-in-Time (1) Over Time Total Point-in-Time (1) Over Time Total Americas $ 103,113 $ 18,595 $ 121,708 $ 105,773 $ 23,141 $ 128,914 EMEA 56,203 18,453 74,656 74,101 18,624 92,725 APAC 94,419 10,546 104,965 103,874 8,718 112,592 Total net sales (1) $ 253,735 $ 47,594 $ 301,329 $ 283,748 $ 50,483 $ 334,231 (1) Net sales contains hedging gains and losses, which do not represent revenues recognized from customers.  Six Months Ended June 30, (In thousands) (Unaudited)  2020 2019 Net sales: Point-in-Time (1) Over Time Total Point-in-Time (1) Over Time Total Americas $ 208,412 $ 38,313 $ 246,725 $ 205,454 $ 46,115 $ 251,569 EMEA 123,896 37,489 161,385 146,569 37,749 184,318 APAC 181,607 20,992 202,599 191,978 17,440 209,418 Total net sales (1) $ 513,915 $ 96,794 $ 610,709 $ 544,001 $ 101,304 $ 645,305 (1) Net sales contains hedging gains and losses, which do not represent revenues recognized from customers. Information about Contract Balances Amounts collected in advance of services being provided are accounted for as deferred revenue. Nearly all of our deferred revenue balance is related to extended hardware and software maintenance contracts. Payment terms and conditions vary by contract type, although payment is typically due within 30 to 90 days of contract inception. In instances where the timing of revenue recognition differs from the timing of invoicing, we have determined our contracts generally do not include a significant financing component. The primary purpose of our invoicing terms is to provide customers with simplified and predictable ways of purchasing our products and services, not to receive financing from our customers, such as invoicing at the beginning of a subscription term with a portion of the revenue recognized ratably over the contract period, or to provide customers with financing, such as multi-year on-premises licenses that are invoiced annually with revenue recognized upfront. Changes in deferred revenue, current and non-current, during the six months ended June 30, 2020 were as follows:  Amount  (In thousands) Balance as of December 31, 2019 $ 164,925 Deferral of revenue billed in current period, net of recognition 74,985 Recognition of revenue deferred in prior periods (77,380) Divestiture of AWR subsidiary (15,296) Foreign currency translation impact (981) Balance as of June 30, 2020 (unaudited) $ 146,253 For the six months ended June 30, 2020, revenue recognized from performance obligations satisfied in prior periods (for example, due to changes in transaction price) was not material. Amounts recognized as revenue in excess of amounts billed are recorded as unbilled receivables. Unbilled receivables which are anticipated to be invoiced in the next twelve months are included in "accounts receivable, net" on the consolidated balance sheet. Based on the nature of our contracts with customers, we do not typically recognize unbilled receivables related to revenues recognized in excess of amounts billed. For the six months ended June 30, 2020, amounts recognized related to unbilled receivables were not material. Unsatisfied Performance Obligations Revenue expected to be recognized in any future period related to remaining performance obligations, excluding revenue pertaining to contracts that have an original expected duration of one year or less, and excluding contracts where revenue is recognized as invoiced, was approximately $60 million as of June 30, 2020. Since we typically invoice customers at contract inception, this amount is included in our current and non-current deferred revenue balances. As of June 30, 2020, we expect to recognize approximately 27% of the revenue related to these unsatisfied performance obligations during the remainder of 2020, 39% during 2021, and 34% thereafter.

Short-term investments

Short-term investments	6 Months Ended
	Jun. 30, 2020
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Short-term investments	Short-term investments The following tables summarize unrealized gains and losses related to our short-term investments designated as available-for-sale debt securities:  As of June 30, 2020 (In thousands) (Unaudited)  Gross Gross  Adjusted Cost Unrealized Gain Unrealized Loss Fair Value Corporate bonds $ 136,698 $ 467 $ (61) $ 137,104 Total Short-term investments $ 136,698 $ 467 $ (61) $ 137,104 (In thousands) As of December 31, 2019  Gross Gross  Adjusted Cost Unrealized Gain Unrealized Loss Fair Value Corporate bonds $ 237,423 $ 628 $ (68) $ 237,983 Total Short-term investments $ 237,423 $ 628 $ (68) $ 237,983 The following tables summarize the contractual maturities of our short-term investments designated as available-for-sale debt securities:  As of June 30, 2020 (In thousands) (Unaudited)  Adjusted Cost Fair Value Due in less than 1 year $ 99,137 $ 99,500 Due in 1 to 5 years 37,561 37,604 Total available-for-sale debt securities $ 136,698 $ 137,104  Due in less than 1 year Adjusted Cost Fair Value Corporate bonds $ 99,137 $ 99,500 Total available-for-sale debt securities $ 99,137 $ 99,500  Due in 1 to 5 years Adjusted Cost Fair Value Corporate bonds $ 37,561 $ 37,604 Total available-for-sale debt securities $ 37,561 $ 37,604 Equity-Method Investments

Fair value measurements

Fair value measurements	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Fair value measurements	Fair value measurements We define fair value to be the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, we consider the principal or most advantageous market that market participants may use when pricing the asset or liability. We follow a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. Fair value measurement is determined based on the lowest level input that is significant to the fair value measurement. The three values of the fair value hierarchy are the following: Level 1 – Quoted prices in active markets for identical assets or liabilities Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly Level 3 – Inputs that are not based on observable market data Assets and liabilities measured at fair value on a recurring basis are summarized below:  Fair Value Measurements at Reporting Date Using (In thousands) (Unaudited) Description June 30, 2020 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Cash and cash equivalents available for sale: Money Market Funds $ 64,379 $ 64,379 $ — $ — Short-term investments available for sale: Corporate notes and bonds 137,104 — 137,104 — Derivatives 13,578 — 13,578 — Total Assets $ 215,061 $ 64,379 $ 150,682 $ —  Liabilities Derivatives $ (8,798) $ — $ (8,798) $ — Total Liabilities $ (8,798) $ — $ (8,798) $ — (In thousands) Fair Value Measurements at Reporting Date Using Description December 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Cash and cash equivalents available for sale: Money Market Funds $ 87,397 $ 87,397 $ — $ — Corporate notes and bonds 9,962 — 9,962 — Short-term investments available for sale: Corporate bonds 237,983 — 237,983 — Derivatives 8,209 — 8,209 — Total Assets $ 343,551 $ 87,397 $ 256,154 $ —  Liabilities Derivatives $ (2,872) $ — $ (2,872) $ — Total Liabilities $ (2,872) $ — $ (2,872) $ — We value our available-for-sale short-term investments based on pricing from third party pricing vendors, who may use quoted prices in active markets for identical assets (Level 1 inputs) or inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs) in determining fair value. We classify all of our fixed income available-for-sale securities as having Level 2 inputs. The valuation techniques used to measure the fair value of our financial instruments having Level 2 inputs were derived from non-binding market consensus prices that are corroborated by observable market data, quoted market prices for similar instruments, or pricing models, such as discounted cash flow techniques. We believe all of these sources reflect the credit risk associated with each of our available-for-sale short-term investments. Short-term investments available-for-sale consists of debt securities issued by states of the U.S. and political subdivisions of the U.S., corporate debt securities and debt securities issued by U.S. government organizations and agencies. All of our short-term investments available-for-sale have contractual maturities of less than 60 months. Derivatives include foreign currency forward contracts. Our foreign currency forward contracts are valued using an income approach (Level 2) based on the spot rate less the contract rate multiplied by the notional amount. We consider counterparty credit risk in the valuation of our derivatives. However, counterparty credit risk did not impact the valuation of our derivatives during the six months ended June 30, 2020. There were no transfers in or out of Level 1 or Level 2 during the six months ended June 30, 2020. As of June 30, 2020, our short-term investments did not include sovereign debt from any country other than the United States. The majority of our short-term investments that are located outside of the U.S. are denominated in the U.S. dollar with the exception of $5 million U.S. dollar equivalent of corporate bonds that are denominated in Euro. We did not have any items that were measured at fair value on a nonrecurring basis at June 30, 2020 and December 31, 2019. The carrying value of net accounts receivable, accounts payable, and long-term debt contained in the consolidated balance sheets approximates fair value.

Derivative instruments and hedg

Derivative instruments and hedging activities	6 Months Ended
	Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative instruments and hedging activities	Derivative instruments and hedging activities We recognize all of our derivative instruments as either assets or liabilities in our statement of financial position at fair value. The accounting for changes in the fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship. For those derivative instruments that are designated and qualify as hedging instruments, we designate the hedging instrument, based upon the exposure being hedged, as a fair value hedge, cash flow hedge, or a hedge of a net investment in a foreign operation. We have operations in approximately 45 countries. Sales outside of the Americas accounted for approximately 60% and 61% of our net sales during the three months ended June 30, 2020 and 2019, and the six months ended June 30, 2020 and 2019, respectively. Our activities expose us to a variety of market risks, including the effects of changes in foreign currency exchange rates. These financial risks are monitored and managed by us as an integral part of our overall risk management program. We maintain a foreign currency risk management strategy that uses derivative instruments (foreign currency forward contracts) to help protect our earnings and cash flows from fluctuations caused by the volatility in currency exchange rates. Movements in foreign currency exchange rates pose a risk to our operations and competitive position, in that exchange rate changes may affect our profitability and cash flow, and the business or pricing strategies of our non-U.S. based competitors. The vast majority of our foreign sales are denominated in the customers’ local currency. We purchase foreign currency forward contracts as hedges of forecasted sales that are denominated in foreign currencies and as hedges of foreign currency denominated financial assets or liabilities. These contracts are entered into to help protect against the risk that the eventual dollar-net-cash inflows resulting from such sales or firm commitments will be adversely affected by changes in exchange rates. We also purchase foreign currency forward contracts as hedges of forecasted expenses that are denominated in foreign currencies. These contracts are entered into to help protect against the risk that the eventual dollar-net-cash outflows resulting from foreign currency operating and cost of sales expenses will be adversely affected by changes in exchange rates. We designate foreign currency forward contracts as cash flow hedges of forecasted net sales or forecasted expenses. In addition, we hedge our foreign currency denominated balance sheet exposures using foreign currency forward contracts that are not designated as hedging instruments. None of our derivative instruments contain a credit-risk-related contingent feature. Cash flow hedges To help protect against the reduction in value caused by a fluctuation in foreign currency exchange rates of forecasted foreign currency cash flows resulting from international sales over the next one For derivative instruments that are designated and qualify as a cash flow hedge, the gain or loss on the derivative is reported as a component of accumulated other comprehensive income ("OCI") and reclassified into earnings in the same line item (net sales, operating expenses, or cost of sales) associated with the forecasted transaction and in the same period or periods during which the hedged transaction affects earnings. Hedge effectiveness of foreign currency forwards designated as cash flow hedges are measured by comparing the hedging instrument’s cumulative change in fair value from inception to maturity to the forecasted transaction’s terminal value. We held forward contracts designated as cash flow hedges with the following notional amounts: (In thousands) US Dollar Equivalent  As of June 30, 2020 As of December 31,  (Unaudited) 2019 British pound $ 11,486 $ 13,988 Chinese yuan 41,395 32,970 Euro 197,262 130,122 Hungarian forint 99,198 95,228 Japanese yen 92,429 53,527 Korean won 23,670 24,728 Malaysian ringgit 47,892 32,725 Total forward contracts notional amount $ 513,332 $ 383,288 The contracts in the foregoing table had contractual maturities of 39 months or less and 36 months or less at June 30, 2020 and December 31, 2019, respectively. At June 30, 2020, we expect to reclassify $6.8 million of gains on derivative instruments from accumulated OCI to net sales during the next twelve months when the hedged international sales occur, $2.3 million of losses on derivative instruments from accumulated OCI to cost of sales during the next twelve months when the hedged cost of sales are incurred and $1.6 million of losses on derivative instruments from accumulated OCI to operating expenses during the next twelve months when the hedged operating expenses occur. Expected amounts are based on derivative valuations at June 30, 2020. Actual results may vary materially as a result of changes in the corresponding exchange rates subsequent to this date. The gains and losses recognized in earnings due to hedge ineffectiveness were not material for each of the six months ended June 30, 2020 and 2019 and are included as a component of net income under the line item “other (expense) income.” Other Derivatives Other derivatives not designated as hedging instruments consist primarily of foreign currency forward contracts that we use to hedge our foreign denominated net receivable or net payable positions to help protect against the change in value caused by a fluctuation in foreign currency exchange rates. We typically attempt to hedge up to 90% of our outstanding foreign denominated net receivables or net payables and typically limit the duration of these foreign currency forward contracts to approximately 90 days or less. The gain or loss on the derivatives as well as the offsetting gain or loss on the hedge item attributable to the hedged risk is recognized in current earnings under the line item “other (expense) income.” As of June 30, 2020 and December 31, 2019, we held foreign currency forward contracts that were not designated as hedging instruments with a notional amount of $83 million and $41 million, respectively. The following tables present the fair value of derivative instruments on our Consolidated Balance Sheets at June 30, 2020 and December 31, 2019, respectively.  Asset Derivatives  June 30, 2020 December 31, 2019 (In thousands) (Unaudited)  Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as hedging instruments Foreign exchange contracts - ST forwards Prepaid expenses and other current assets $ 7,029 Prepaid expenses and other current assets $ 7,039 Foreign exchange contracts - LT forwards Other long-term assets 6,038 Other long-term assets 970 Total derivatives designated as hedging instruments $ 13,067 $ 8,009 Derivatives not designated as hedging instruments Foreign exchange contracts - ST forwards Prepaid expenses and other current assets $ 511 Prepaid expenses and other current assets $ 200 Total derivatives not designated as hedging instruments $ 511 $ 200 Total derivatives $ 13,578 $ 8,209  Liability Derivatives  June 30, 2020 December 31, 2019 (In thousands) (Unaudited)  Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as hedging instruments Foreign exchange contracts - ST forwards Other current liabilities $ (4,098) Other current liabilities $ (2,089)  Foreign exchange contracts - LT forwards Other long-term liabilities (3,954) Other long-term liabilities (351) Total derivatives designated as hedging instruments $ (8,052) $ (2,440)  Derivatives not designated as hedging instruments  Foreign exchange contracts - ST forwards Other current liabilities $ (746) Other current liabilities $ (432) Total derivatives not designated as hedging instruments $ (746) $ (432)  Total derivatives $ (8,798) $ (2,872) The following tables present the effect of derivative instruments on our Consolidated Statements of Income for the three months ended June 30, 2020 and 2019, respectively: June 30, 2020 (In thousands) (Unaudited) Derivatives in Cash Flow Hedging Relationship Gain or (Loss) Recognized in OCI on Derivative Location of Gain or (Loss) Reclassified from Accumulated OCI into Income Gain or (Loss) Reclassified from Accumulated OCI into Income Foreign exchange contracts - forwards $ (5,132) Net sales $ 2,726  Foreign exchange contracts - forwards 2,962 Cost of sales (850)  Foreign exchange contracts - forwards 2,096 Operating expenses (637) Total $ (74) $ 1,239 June 30, 2019 (In thousands) (Unaudited) Derivatives in Cash Flow Hedging Relationship Gain or (Loss) Recognized in OCI on Derivative Location of Gain or (Loss) Reclassified from Accumulated OCI into Income Gain or (Loss) Reclassified from Accumulated OCI into Income Foreign exchange contracts - forwards $ (1,350) Net sales $ 2,651  Foreign exchange contracts - forwards (139) Cost of sales (61)  Foreign exchange contracts - forwards 9 Operating expenses (74) Total $ (1,480) $ 2,516 (In thousands) Derivatives not Designated as Hedging Instruments Location of Gain (Loss) Recognized in Income Amount of Gain (Loss) Recognized in Income Amount of Gain (Loss) Recognized in Income  June 30, 2020 June 30, 2019  (Unaudited) (Unaudited) Foreign exchange contracts - forwards Other expense (income) $ (193) (141)  Total $ (193) $ (141) The following tables present the effect of derivative instruments on our Consolidated Statements of Income for the six months ended June 30, 2020 and 2019, respectively: June 30, 2020 (In thousands) (Unaudited) Derivatives in Cash Flow Hedging Relationship Gain or (Loss) Recognized in OCI on Derivative Location of Gain or (Loss) Reclassified from Accumulated OCI into Income Gain or (Loss) Reclassified from Accumulated OCI into Income Foreign exchange contracts - forwards $ 5,724 Net sales $ 5,260  Foreign exchange contracts - forwards (3,798) Cost of sales (1,369)  Foreign exchange contracts - forwards (2,524) Operating expenses (1,082) Total (598) $ 2,809 June 30, 2019 (In thousands) (Unaudited) Derivatives in Cash Flow Hedging Relationship Gain or (Loss) Recognized in OCI on Derivative Location of Gain or (Loss) Reclassified from Accumulated OCI into Income Gain or (Loss) Reclassified from Accumulated OCI into Income Foreign exchange contracts - forwards $ 450 Net sales $ 4,396  Foreign exchange contracts - forwards (409) Cost of sales (41)  Foreign exchange contracts - forwards (309) Operating expenses (45) Total $ (268) $ 4,310 (In thousands) Derivatives not Designated as Hedging Instruments Location of Gain (Loss) Recognized in Income Amount of Gain (Loss) Recognized in Income Amount of Gain (Loss) Recognized in Income  June 30, 2020 June 30, 2019  (Unaudited) (Unaudited) Foreign exchange contracts - forwards Other income (expense) $ 105 (369) Total $ 105 $ (369)

Inventories, net

Inventories, net	6 Months Ended
	Jun. 30, 2020
Inventory Disclosure [Abstract]
Inventories, net	Inventories, net Inventories, net consist of the following:  June 30, 2020 December 31, (In thousands) (Unaudited) 2019  Raw materials $ 112,248 $ 110,078 Work-in-process 10,920 10,613 Finished goods 86,760 79,719 Total $ 209,928 $ 200,410

Intangible assets and goodwill,

Intangible assets and goodwill, net	6 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets and goodwill, net	Intangible assets and goodwill, net Intangible assets at June 30, 2020 and December 31, 2019 are as follows:  June 30, 2020 (In thousands) (Unaudited) December 31, 2019  Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Capitalized software development costs $ 136,118 $ (91,581) $ 44,537 $ 132,789 $ (76,910) $ 55,879 Acquired technology 65,297 (62,776) 2,521 91,900 (87,917) 3,983 Patents 36,214 (25,296) 10,918 35,609 (23,993) 11,616 Other 37,684 (26,685) 10,999 44,490 (31,885) 12,605 Total $ 275,313 $ (206,338) $ 68,975 $ 304,788 $ (220,705) $ 84,083 Software development costs capitalized for the three months ended June 30, 2020 and 2019 were $1.3 million and $2.2 million, respectively, and related amortization expense was $7.4 million and $6.9 million, respectively. For the six months ended June 30, 2020 and 2019, capitalized software development costs were $3.3 million and $4.6 million, respectively, and related amortization expense was $14.7 million and $13.8 million, respectively. Capitalized software development costs for the three months ended June 30, 2020 and 2019 included costs related to stock-based compensation of $0.1 million and $0.0 million, respectively. For the six months ended June 30, 2020 and 2019, capitalized software development costs included costs related to stock-based compensation of $0.2 million and $0.1 million, respectively. The related amounts in the table above are net of fully amortized assets. Amortization of capitalized software development costs is computed on an individual product basis for those products available for market and is recognized based on the product’s estimated economic life, generally three three Goodwill The carrying amount of goodwill as of June 30, 2020, was as follows:  Amount  (In thousands) Balance as of December 31, 2019 $ 262,242 Foreign currency translation impact 132 Divestiture $ (7,221) Balance as of June 30, 2020 (unaudited) $ 255,153

Leases

Leases	6 Months Ended
	Jun. 30, 2020
Leases [Abstract]
Leases	Leases We have operating leases for corporate offices, automobiles, and certain equipment. Our leases have remaining terms of 1 year to 94 years, some of which may include options to extend the leases for up to 9 years, and some of which may include options to terminate the leases within 1 year. Leases with an initial term of 12 months or less are not recorded on the balance sheet. We recognize lease expense for these leases on a straight-line basis over the lease term. Amounts related to finance lease activities and income from leasing activities were not material for the periods presented. The components of operating lease expense were as follows (unaudited): Three Months Ended Six Months Ended (In thousands) June 30, 2020 June 30, 2019 June 30, 2020 June 30, 2019 Operating Lease Cost (a) $ 5,389 $ 5,769 $ 11,071 $ 11,495 (a) includes variable and short-term lease costs Maturities of lease liabilities as of June 30, 2020 were as follows (unaudited): (In thousands) Years ending December 31, Operating Leases 2020 (Excluding the six months ended June 30, 2020) $ 8,948 2021 14,057 2022 8,755 2023 7,147 2024 6,599 Thereafter 13,720 Total future minimum lease payments 59,226 Less imputed interest (10,988) Total $ 48,238 As of June 30, 2020, we have additional operating leases, that have not commenced during the six months ended June 30, 2020, which were not material.

Income taxes

Income taxes	6 Months Ended
	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income taxes	Income taxes We account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the expected tax consequences of temporary differences between the tax bases of assets and liabilities and their reported amounts. Valuation allowances are established when necessary to reduce deferred tax assets to amounts which are more likely than not to be realized. We had a valuation allowance of $87 million and $86 million at June 30, 2020 and December 31, 2019, respectively. A majority of the valuation allowance is related to the deferred tax assets of National Instruments Hungary Kft. (“NI Hungary”). We account for uncertainty in income taxes recognized in our financial statements using prescribed recognition thresholds and measurement attributes for financial statement disclosure of tax positions taken or expected to be taken on our tax returns. We had $6.8 million and $6.7 million of unrecognized tax benefits at June 30, 2020 and December 31, 2019, respectively, all of which would affect our effective income tax rate if recognized. We recorded a gross decrease in unrecognized tax benefits of $31,000 for the three months ended June 30, 2020, as a result of the tax positions taken during prior periods. As of June 30, 2020, it is reasonably possible that we will recognize tax benefits in the amount of $2.9 million in the next twelve months due to the closing of open tax years. The nature of the uncertainty is related to deductions taken on returns that have not been examined by the applicable tax authority. Our continuing policy is to recognize interest and penalties related to income tax matters in income tax expense. As of June 30, 2020, we had approximately $0.8 million accrued for interest related to uncertain tax positions. The tax years 2013 through 2020 remain open to examination by the major taxing jurisdictions to which we are subject. Our provision for income taxes reflected an effective tax rate of 29% and 13% for the three months ended June 30, 2020 and 2019, respectively, and 24% and 12% for the six months ended June 30, 2020 and 2019, respectively. For the three and six months ended June 30, 2020, our effective tax rate was higher than the U.S. federal statutory rate of 21% as a result of state income taxes net of federal benefit, nondeductible officer compensation, the net effect of non-permanent investment in foreign jurisdictions, nondeductible acquisition costs, and the gain on the sale of our AWR business, offset by the research and development tax credit, an enhanced deduction for certain research and development expenses, and the deduction for foreign-derived deduction eligible income. For the three and six months ended June 30, 2019, our effective tax rate was lower than the U.S. federal statutory rate of 21% as a result of an enhanced deduction for certain research and development expenses, profits in foreign jurisdictions with reduced income tax rates, the deduction for foreign-derived deduction eligible income, a decrease in unrecognized tax benefits resulting from the closing of open tax years, the research and development tax credit, excess tax benefits from share-based compensation, and a tax benefit from disqualifying dispositions of equity awards that do not ordinarily result in a tax benefit, offset by the U.S. tax on global intangible low-taxed income and nondeductible officer compensation. Our earnings in Hungary are subject to a statutory tax rate of 9%. In addition, our research and development activities in Hungary benefit from a tax law in Hungary that provides for an enhanced deduction for qualified research and development expenses. The tax position of our Hungarian operations resulted in income tax expense of $0.3 million and $0.1 million for the three and six months ended June 30, 2020, respectively, and income tax benefits of $1.6 million and $2.6 million for the three and six months ended June 30, 2019, respectively. Earnings from our operations in Malaysia are free of tax under a tax holiday effective January 1, 2013. This tax holiday expires in 2037. If we fail to satisfy the conditions of the tax holiday, this tax benefit may be terminated early. The income tax benefits of the tax holiday for the three and six months ended June 30, 2020 were approximately $0.1 million and $0.3 million, respectively. The income tax benefits of the tax holiday for the three and six months ended June 30, 2019 were approximately $0.8 million and $1.3 million, respectively. The impact of the tax holiday on a per share basis for the three and six months ended June 30, 2020 and June 30, 2019 was a benefit of $0.01 per share. No other taxing jurisdictions had a significant impact on our effective tax rate. We have not entered into any advanced pricing or other agreements with the IRS with regard to any foreign jurisdictions.

Comprehensive Income

Comprehensive Income	6 Months Ended
	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Comprehensive income	Comprehensive income Our comprehensive income is comprised of net income, foreign currency translation, unrealized gains and losses on forward contracts and securities classified as available-for-sale. The accumulated OCI, net of tax, for the six months ended June 30, 2020 and 2019, consisted of the following:  June 30, 2020  (Unaudited) (In thousands) Currency translation adjustment Investments Derivative instruments Accumulated other comprehensive income/(loss) Balance as of December 31, 2019 $ (25,831) $ (85) 4,846 $ (21,070) Current-period other comprehensive (loss) income (1,975) (154) 2,211 82 Reclassified from accumulated OCI into income — — (2,809) (2,809) Income tax (benefit) expense — (56) 124 68 Balance as of June 30, 2020 $ (27,806) $ (183) $ 4,124 $ (23,865)  June 30, 2019  (Unaudited) (In thousands) Currency translation adjustment Investments Derivative instruments Accumulated other comprehensive income/(loss) Balance as of December 31, 2018 $ (22,485) $ (1,308) 6,862 $ (16,931) Current-period other comprehensive (loss) income (802) 1,913 4,042 5,153 Reclassified from accumulated OCI into income — — (4,310) (4,310) Income tax expense (benefit) — 8 (66) (58) Balance as of June 30, 2019 $ (23,287) $ 597 $ 6,660 $ (16,030) ໿

Authorized shares of common and

Authorized shares of common and preferred stock and stock-based compensation plans	6 Months Ended
	Jun. 30, 2020
Share-based Payment Arrangement [Abstract]
Authorized shares of common and preferred stock and stock-based compensation plans	Authorized shares of common and preferred stock and stock-based compensation plans Authorized shares of common and preferred stock Following approval by the Company’s Board of Directors and stockholders, on May 14, 2013, the Company’s certificate of incorporation was amended to increase the authorized shares of common stock by 180,000,000 shares to a total of 360,000,000 shares. As a result of this amendment, the total number of shares which the Company is authorized to issue is 365,000,000 shares, consisting of (i) 5,000,000 shares of preferred stock, par value $0.01 per share, and (ii) 360,000,000 shares of common stock, par value $0.01 per share. Restricted stock unit plans Our stockholders approved our 2005 Incentive Plan (the “2005 Plan”) in May 2005. At the time of approval, 4,050,000 shares of our common stock were reserved for issuance under the 2005 Plan, as well as the number of shares which had been reserved but not issued under our 1994 Incentive Plan (the “1994 Plan”) which terminated in May 2005, and any shares that returned to the 1994 Plan as a result of termination of options or repurchase of shares issued under such plan. The 2005 Plan, provided for the granting of incentive awards in the form of restricted stock and RSUs to directors, executive officers and employees of the Company and its subsidiaries. Awards vest over a three five five Our stockholders approved our 2010 Incentive Plan (the “2010 Plan”) on May 11, 2010. At the time of approval, 3,000,000 shares of our common stock were reserved for issuance under the 2010 Plan, as well as the 3,362,304 shares of common stock that were reserved but not issued under the 1994 Plan and the 2005 Plan as of May 11, 2010, and any shares that are returned to the 1994 Plan and the 2005 Plan as a result of the forfeiture or termination of options or RSUs or repurchase of shares issued under those plans. The 2010 Plan, provided for the granting of incentive awards in the form of restricted stock and RSUs to employees, directors and consultants of the Company and employees and consultants of any parent or subsidiary of the Company. Awards vest over a three five five Our stockholders approved our 2015 Equity Incentive Plan (the “2015 Plan”) on May 12, 2015. At the time of approval, 3,000,000 shares of our common stock were reserved for issuance under the 2015 Plan, as well as the 2,518,416 shares of common stock that were reserved but not issued under the 2010 Plan as of May 12, 2015, and any shares that were returned to the 1994, 2005, and the 2010 Plans as a result of the forfeiture or termination of options or RSUs or repurchase of shares issued under those plans. The 2015 Plan provides for the granting of incentive awards in the form of restricted stock and RSUs to employees, directors and consultants of the Company and employees and consultants of any parent or subsidiary of the Company and such awards may be subject to performance-based vesting conditions. Awards generally vest over a three four five five Our stockholders approved our 2020 Equity Incentive Plan (the "2020 Plan") on May 5, 2020. At the time of approval, 4,500,000 shares of our common stock were reserved for issuance under the 2020 Plan, as well as the 567,142 shares of common stock that were reserved but not issued under the 2015 Plan as of May 5, 2020, and any shares that were returned to the 2005, 2010, and 2015 Plans as a result of the forfeiture or termination of RSUs or repurchase of shares issued under those plans. The 2020 Plan provides for the granting of incentive awards in the form of restricted stock and RSUs to employees, directors and consultants of the Company and employees and consultants of any parent or subsidiary of the Company. Awards generally vest over a one three Employee stock purchase plan Our employee stock purchase plan ("ESPP") permits substantially all domestic employees and employees of designated subsidiaries to acquire our common stock at a purchase price of 85% of the lower of the market price at the beginning or the end of the purchase period. The plan has quarterly purchase periods generally beginning on February 1, May 1, August 1 and November 1 of each year. Employees may designate up to 15% of their compensation for the purchase of common stock under the ESPP. On May 14, 2019, our stockholders approved an additional 3,000,000 shares for issuance under our employee stock purchase plan. At June 30, 2020, we had 3,577,369 shares of common stock reserved for future issuance under the ESPP. We issued 508,401 shares under this plan in the six months ended June 30, 2020 and the weighted average purchase price was $33.93 per share. During the six months ended June 30, 2020, we did not make any changes in accounting principles or methods of estimates with respect to our ESPP. Authorized Preferred Stock and Preferred Stock Purchase Rights Plan We have 5,000,000 authorized shares of preferred stock. On January 21, 2004, our Board of Directors designated 750,000 of these shares as Series A Participating Preferred Stock in conjunction with the adoption of a Preferred Stock Rights Agreement which expired on May 10, 2014. There were no shares of preferred stock issued and outstanding at June 30, 2020. Stock repurchases and retirements

Segment and geographic informat

Segment and geographic information	6 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Segment and geographic information	Segment and geographic information We operate as one operating segment. Operating segments are defined as components of an enterprise for which separate financial information is evaluated regularly by the chief operating decision maker, who is our chief executive officer, in deciding how to allocate resources and in assessing performance. Our chief operating decision maker evaluates our financial information and resources and assesses the performance of these resources on a consolidated basis. Since we operate in one operating segment, all required financial segment information can be found in the condensed consolidated financial statements and the notes thereto. We sell our products in three geographic regions which consist of Americas, EMEA and APAC. Our sales to these regions share similar economic characteristics, similar product mix, similar customers, and similar distribution methods. Revenue from the sale of our products, which are similar in nature, and software maintenance is reflected as total net sales in our Consolidated Statements of Income. (See Note 2 - Revenue of Notes to Consolidated Financial Statements for total net sales by the major geographic areas in which we operate).

Debt

Debt	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Debt	Debt On June 12, 2020, we entered into an Amended and Restated Credit Agreement (the "Credit Agreement") with the lenders from time to time party thereto (the "Lenders"), and Wells Fargo Bank, National Association, as the administrative agent, swingline lender and issuing lender ("Administrative Agent"), with Wells Fargo Securities, LLC and BofA Securities, Inc., as joint lead arrangers and joint bookrunners. The Credit Agreement amends and restates in its entirety and refinances our previous loan agreement, dated as of May 9, 2013, with Wells Fargo Bank, National Association, which was amended on April 16, 2020 as well as on October 29, 2015 and April 27, 2018 (the "Loan Agreement"). The Credit Agreement provides for an initial $145 million credit facility consisting of a secured revolving loan facility in an aggregate principal amount of up to $75 million, including a $10 million sub-facility for the issuance of letters of credit, and a secured term loan facility in an aggregate principal amount of up to $70 million, which term loan facility is available until the date that is 60 days following the closing date of the Credit Agreement. Subject to the terms and conditions of the Credit Agreement, including obtaining commitments from existing lenders or new lenders, we may request additional term loan or revolving commitments of up to $105 million in the aggregate. Pursuant to the Credit Agreement, the revolving line of credit terminates, and all revolving loans and term loans are due and payable, on June 12, 2023. The revolving loans and term loans accrue interest, at our option, at a base rate equal to the highest of (a) the prime rate, (b) the federal funds rate plus 0.50%, and (c) a LIBOR loan interest rate of LIBOR for an interest period of one month plus 1.00%, plus a margin of 1.25% to 1.75%, or LIBOR plus a margin of 2.25% to 2.75%, in each case with the margin being determined based upon our consolidated total leverage ratio. The term loan amortizes in quarterly payments equal to 1.25% of the original principal amount of the term loan, with the remaining outstanding balance being due and payable at maturity. The Credit Agreement contains financial covenants requiring us to maintain a maximum total leverage ratio of less than or equal to 2.75 to 1.00 and a minimum fixed charge coverage ratio of greater than or equal to 1.25 to 1.00, in each case determined in accordance with the Credit Agreement. The Credit Agreement provides for a commitment fee of 0.375% to 0.500% per annum, determined based upon our consolidated total leverage ratio, on the average daily unused amount of the revolving committed amount, payable quarterly in arrears. In addition, we will pay commitment fees based on the applicable margin set forth in the Credit Agreement in an amount equal to 0.375% to 0.500% per annum, determined based upon our consolidated total leverage ratio, of the initial term loan as a commitment fee until such time as the initial term loan is drawn or the initial term loan commitments expire or are terminated. The Credit Agreement requires that certain of the Company’s wholly-owned domestic subsidiaries (the "Subsidiary Guarantors") will enter into a guaranty agreement ("Guaranty") in favor of the Administrative Agent guarantying our obligations under the Credit Agreement, among other things. In connection with the Credit Agreement and Guaranty, we, along with the Subsidiary Guarantors and the Administrative Agent have entered into a Collateral Agreement ("Collateral Agreement") pursuant to which we and each Subsidiary Guarantor have granted a lien on substantially all of our assets to secure their obligations under the Credit Agreement and the Guaranty. The Credit Agreement contains customary affirmative and negative covenants. The affirmative covenants include, among other things, delivery of financial statements, compliance certificates and notices, payment of taxes and other obligations, maintenance of existence, maintenance of properties and insurance, maintenance of books and records, and compliance with applicable laws and regulations. The negative covenants include, among other things, limitations on indebtedness, liens, mergers, consolidations, acquisitions and sales of assets, investments, changes in the nature of the business, affiliate transactions and certain restricted payments. The Credit Agreement contains customary events of default including, among other things, payment defaults, breaches of covenants or representations and warranties, cross-defaults with certain other indebtedness, bankruptcy and insolvency events, judgment defaults and change in control events, subject to grace periods in certain instances. Upon an event of default, the Administrative Agent and the Lenders may declare all or a portion of our outstanding obligations payable by us to be immediately due and payable and exercise other rights and remedies provided for under the Credit Agreement. Under certain circumstances, a default interest rate will apply on all obligations during the existence of an event of default under the Credit Agreement at a per annum rate of interest equal to 2.00% above the otherwise applicable interest rate. Proceeds of loans made under the revolving loan facility portion of the Credit Agreement may be used for working capital and other general corporate purposes. We may prepay the loans under the Credit Agreement in whole or in part at any time without premium or penalty. The following table presents the amounts outstanding related to our borrowing arrangements discussed above as of June 30, 2020 and December 31, 2019, respectively (unaudited, in thousands): June 30, December 31, 2020 2019 Secured 2020 term loan (effective interest rate of 3.0%) $ 70,000 $ — 2020 revolving loan facility (effective interest rate of 3.0%) 20,000 — Total Debt 90,000 — Less: Unamortized debt issuance costs (1,480) — Less: Current Portion of Total Debt (3,500) — Total Debt, non-current $ 85,020 $ — Restricted Cash Restricted cash represents cash that, under the terms of our borrowing arrangements, had been set aside to partially fund our acquisition of Optimal Plus Ltd. ("OptimalPlus") as of June 30, 2020. The proceeds from our $70.0 million term loan were recorded as non-current restricted cash. Upon the closing of the OptimalPlus acquisition on July 2, 2020, the proceeds were released to partially fund the acquisition consideration. The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheet to the amount shown in the condensed consolidated statement of cash flows: June 30, December 31, 2020 2019 (in thousands) Cash and cash equivalents $ 471,205 $ 194,616 Restricted cash 70,000 — Total cash, cash equivalent, and restricted cash $ 541,205 $ 194,616

Commitments and contingencies

Commitments and contingencies	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	Commitments and contingencies We offer a one-year limited warranty on most hardware products which is included in the terms of sale of such products. We also offer optional extended warranties on our hardware products for which the related revenue is recognized ratably over the warranty period. Provision is made for estimated future warranty costs at the time of the sale for the estimated costs that may be incurred under the standard warranty. Our estimate is based on historical experience and product sales during the period. The warranty reserve for the six months ended June 30, 2020 and 2019 was as follows:  Six Months Ended June 30, (In thousands) (Unaudited)  2020 2019 Balance at the beginning of the period $ 2,561 $ 3,173 Accruals for warranties issued during the period 1,165 1,017 Accruals related to pre-existing warranties 298 (571) Settlements made (in cash or in kind) during the period (1,322) (1,101) Balance at the end of the period $ 2,702 $ 2,518

Restructuring

Restructuring	6 Months Ended
	Jun. 30, 2020
Restructuring and Related Activities [Abstract]
Restructuring	Restructuring Since the first quarter of 2017, we have been taking steps to optimize our processes, reduce job duplication, evaluate where we should shift and centralize activities, improve efficiencies, and rebalance our resources on what we believe to be higher return activities. These steps involve reductions in our overall employee headcount. The timing and scope of our headcount reductions will vary. A summary of the charges in our consolidated statement of operations resulting from our restructuring activities is shown below:  Three Months Ended June 30, Six Months Ended June 30, (In thousands) (Unaudited) (Unaudited)  2020 2019 2020 2019 Cost of sales $ — — $ 20 — Research and development 79 311 4,679 656 Sales and marketing 1,227 2,984 7,542 4,965 General and administrative 247 533 562 1,523 Total restructuring and other related costs $ 1,553 3,828 $ 12,803 7,144 A summary of balance sheet activity related to our restructuring activity is shown below:  Restructuring Liability  (in thousands) Balance as of December 31, 2019 $ 9,527 Income statement expense 12,803 Cash payments (16,834) Balance as of June 30, 2020 $ 5,496 The liability of $5.5 million at June 30, 2020 relating to our restructuring activity is recorded in the “accrued compensation” line item of our consolidated balance sheet. ໿

Litigation

Litigation	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Litigation	Litigation    We are not currently a party to any material litigation. However, in the ordinary course of our business, we have in the past, are currently and will likely become involved in various legal proceedings, claims, and regulatory, tax or government inquiries and investigations, and could incur uninsured liability in any one or more of them. We also periodically receive notifications from various third parties related to alleged infringement of patents or intellectual property rights, commercial disputes or other matters. No assurances can be given with respect to the extent or outcome of any investigation, litigation or dispute.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent events Dividends On July 29, 2020, our Board of Directors declared a quarterly cash dividend of $0.26 per common share, payable on September 8, 2020, to stockholders of record on August 17, 2020. Acquisition On July 2, 2020, we completed the acquisition of OptimalPlus, a global leader in data analytics software for the semiconductor, automotive and electronics industries that is based in Israel. As a result of acquiring 100% of the outstanding share capital of OptimalPlus, OptimalPlus became our wholly-owned subsidiary. This transaction is being accounted for as a business combination using the acquisition method of accounting. All of the acquired assets and liabilities of OptimalPlus will be recorded at their respective fair values as of the acquisition date. Transaction costs will be expensed as incurred. At the acquisition date, total consideration transferred was approximately $357 million, inclusive of $16 million in cash acquired. Additionally, unvested in-the-money share options of certain OptimalPlus employees were exchanged into the right to receive deferred cash consideration in accordance with the terms of the share purchase agreement. Approximately $8 million of deferred cash consideration was allocated to post-combination expense and is not included in the total consideration transferred. The deferred cash consideration is subject to the original vesting schedule of the corresponding unvested options that were replaced and the amounts will be recognized as compensation expense over the remaining service period. The acquisition was funded primarily by cash on hand in addition to $70 million drawn under our term loan facility on June 30, 2020. See Note 13 - Debt of Notes to Consolidated Financial Statements for further information on our outstanding borrowings. During the six months ended June 30, 2020, we expensed $3 million of transaction costs in connection with the acquisition of OptimalPlus, which are included in selling, general and administrative expenses in the consolidated statement of comprehensive income.

Basis of presentation (Policies

Basis of presentation (Policies)	6 Months Ended
	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Accounting, Policy	Basis of presentation The accompanying unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto for the fiscal year ended December 31, 2019, included in our Annual Report on Form 10-K filed with the Securities and Exchange Commission ("SEC") on February 20, 2020 (the "Form 10-K"). In our opinion, the accompanying consolidated financial statements reflect all adjustments (consisting only of normal recurring items) considered necessary to present fairly our financial position at June 30, 2020 and December 31, 2019, the results of our operations and comprehensive income for three and six months ended June 30, 2020 and 2019, our cash flows for the six months ended June 30, 2020 and 2019 and our statement of stockholders' equity for the three and six months ended June 30, 2020 and 2019. Our operating results for the three and six months ended June 30, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020. These financial statements have been prepared in accordance with accounting principles generally accepted in the United States. Reclassifications As discussed below, certain prior period amounts have been reclassified to conform to the current period presentation. The reclassifications had no impact on our previously reported net income or cash flows: • We previously included net sales attributable to our operations in India within the EMEIA region in Note 2 - Revenue of Notes to Consolidated Financial Statements. In the second quarter of 2020, we began including these amounts within the APAC (Australia, India, New Zealand, Southeast Asia, China, South Korea and Japan) geographic region, to reflect recent changes within our organizational structure. We have recast historical comparative information to conform to the June 30, 2020 presentation. Refer to Note 2 - Revenue of Notes to Consolidated Financial Statements for our revenue disaggregated by geographic region which now include the Americas (United States, Canada and Latin America), EMEA (Europe, Middle East, and Africa) and APAC. • We previously presented “Interest income”, "Net foreign exchange gain (loss)", and "Other income (loss)" separately on the consolidated statements of income. In the second quarter of 2020, we began presenting these amounts within “Other (expense) income” in the consolidated statements of income for all periods presented. Refer to "Other (expense) income" in Note 1 - Basis of Presentation of Notes to Consolidated Financial Statements for additional information on the amounts that comprise "Other (expense) income". Disclosures about Acquired and Disposed Businesses In May 2020, the SEC adopted Release No. 33-10786 "Amendments to Financial Disclosures about Acquired and Disposed Businesses" ("Release No. 33-10786") which includes amendments to certain of its rules and forms related to the disclosure of financial information regarding acquired or disposed businesses. Among other changes, the amendments impact SEC rules relating to (1) the definition of “significant” subsidiaries, (2) requirements to provide financial statements for “significant” acquisitions, and (3) revisions to the formulation and usage of pro forma financial information. Release No. 33-10786 is effective on January 1, 2021, however, voluntary early adoption is permitted as long as all amendments are adopted in their entirety. We elected to early adopt all provisions of Release No. 33-10786 during the second quarter of 2020. Summary of Significant Accounting Policies As discussed above, we adopted the new expected credit loss standard as of January 1, 2020. There were no other significant changes in our accounting policies during the three and six months ended June 30, 2020 compared to the significant accounting policies described in our Form 10-K.
Earnings Per Share	Earnings Per ShareBasic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of common shares outstanding during each period. Diluted EPS is computed by dividing net income by the weighted average number of common shares and common share equivalents outstanding (if dilutive) during each period. The number of common share equivalents, which includes restricted stock units ("RSUs"), is computed using the treasury stock method.
Other Recently Adopted Accounting Pronouncements and Recent Accounting Guidance Not Yet Adopted	Recently Adopted Accounting Pronouncements Current Expected Credit Losses ("CECL") In June 2016, the Financial Accounting Standards Board ("FASB") issued ASU No. 2016-13, "Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments." The ASU replaces the incurred-loss impairment methodology and requires immediate recognition of estimated credit losses expected to occur for most financial assets, including trade receivables. Credit losses on available-for-sale debt securities with unrealized losses will be recognized as allowances for credit losses limited to the amount by which fair value is below amortized cost. We adopted the new standard on January 1, 2020 and the impact of the adoption was not material to our consolidated financial statements as credit losses are not expected to be significant based on historical collection trends, the financial condition of payment partners, and external market factors. We will continue to actively monitor the impact of the recent coronavirus (COVID-19) pandemic on expected credit losses.
Software to be Sold, Leased, or Otherwise Marketed, Policy	Implementation Costs Incurred in a Cloud Computing Arrangement In August 2018, the FASB issued ASU 2018-15, “Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract,” which clarifies the accounting for implementation costs in cloud computing arrangements. The new standard aligns the treatment of implementation costs incurred by customers in cloud computing arrangements that are service contracts with the treatment of similar costs incurred to develop or obtain internal-use software. Under the new standard, implementation costs are deferred and presented in the same financial statement caption on the condensed consolidated balance sheet as a prepayment of related arrangement fees. The deferred costs are recognized over the term of the arrangement in the same financial statement caption in the condensed consolidated income statement as the related fees of the arrangement. We adopted the new standard on January 1, 2020. The new standard did not have a material impact on our consolidated financial statements and related disclosures.
Fair Value Measurement, Policy	Fair Value Measurements In August 2018, the FASB issued ASU 2018-13, “Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement,” which modifies the disclosure requirements on fair value measurements. We adopted the new standard on January 1, 2020. The new standard did not have a material impact on our consolidated financial statements and related disclosures.
Income Tax, Policy	Income Taxes In December 2019, the FASB issued ASU 2019-12, “Income Taxes — Simplifying the Accounting for Income Taxes (Topic 740),” which simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The amendments in this ASU also improve consistency and simplify other areas of Topic 740 by clarifying and amending existing guidance. The amendments in this ASU will be applied using different approaches depending on what the specific amendment relates to and, for public entities, are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. An entity is permitted to early adopt the guidance, and we early adopted ASU 2019-12 as of January 1, 2020. The adoption did not have a material impact on our consolidated financial statements and related disclosures.
Revenue	Revenue Recognition Revenue is recognized upon transfer of control of the promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. We enter into contracts that can include various combinations of our products or services, which are generally capable of being distinct and accounted for as separate performance obligations. Revenue is recognized net of allowances for returns and any taxes collected from customers, which are subsequently remitted to governmental authorities. Disaggregation of Revenues We disaggregate revenue from contracts with customers based on the timing of transfer of goods or services to customers (point-in-time or over time) and geographic region based on the billing location of the customer. We previously included net sales attributable to our operations in India within the EMEIA region. In the second quarter of 2020, we began including these amounts within the APAC geographic region, to reflect recent changes within our organizational structure. We have recast historical comparative information to conform to the June 30, 2020 presentation. The geographic regions are now presented as the Americas, EMEA and APAC to reflect this change. Information about Contract Balances Amounts collected in advance of services being provided are accounted for as deferred revenue. Nearly all of our deferred revenue balance is related to extended hardware and software maintenance contracts. Payment terms and conditions vary by contract type, although payment is typically due within 30 to 90 days of contract inception. In instances where the timing of revenue recognition differs from the timing of invoicing, we have determined our contracts generally do not include a significant financing component. The primary purpose of our invoicing terms is to provide customers with simplified and predictable ways of purchasing our products and services, not to receive financing from our customers, such as invoicing at the beginning of a subscription term with a portion of the revenue recognized ratably over the contract period, or to provide customers with financing, such as multi-year on-premises licenses that are invoiced annually with revenue recognized upfront.

Basis of presentation (Tables)

Basis of presentation (Tables)	6 Months Ended
	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Disposal Groups, Including Discontinued Operations	The divestiture of AWR resulted in the derecognition of the following assets and liabilities (in thousands): Cash $ 1,027 Accounts receivable, net 7,233 Prepaid and other current assets 283 Goodwill 7,221 Other non-current assets 556 Total Assets 16,320 Deferred revenue 15,296 Other current liabilities 940 Cumulative translation adjustment (660) Total liabilities and stockholders' equity 15,576 Total assets divested, net (including cash) $ 744
Other (Expense) Income	Other (Expense) Income Other (expense) income, net consisted of the following amounts (in thousands): Three Months Ended June 30, Six Months Ended June 30, (Unaudited) (Unaudited) 2020 2019 2020 2019 Interest Income $ 1,011 $ 2,023 $ 3,310 $ 4,257 Net foreign currency loss (838) (1,611) (1,343) (1,245) Other (1,316) 143 (2,550) 119 Other (expense) income, net $ (1,143) $ 555 $ (583) $ 3,131
Reconciliation Of The Denominators Used To Calculate Basic EPS And Diluted EPS	The reconciliation of the denominators used to calculate basic EPS and diluted EPS for the three and six months ended June 30, 2020 and 2019, are as follows:  Three Months Ended June 30, Six Months Ended June 30,  (In thousands) (In thousands)  (Unaudited) (Unaudited)  2020 2019 2020 2019 Weighted average shares outstanding-basic 131,014 132,062 130,813 132,156 Plus: Common share equivalents RSUs 588 911 686 1,016 Weighted average shares outstanding-diluted 131,602 132,973 131,499 133,172
Other Current Liabilities	Other current liabilities on our consolidated balance sheet includes the following amounts (in thousands): As of June 30, 2020 As of December 31, (unaudited) 2019 Income taxes payable - current $ 46,480 $ 6,791 Other 20,338 13,925 Total $ 66,818 $ 20,716

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	Total net sales based on the disaggregation criteria described above are as follows:  Three Months Ended June 30, (In thousands) (Unaudited)  2020 2019 Net sales: Point-in-Time (1) Over Time Total Point-in-Time (1) Over Time Total Americas $ 103,113 $ 18,595 $ 121,708 $ 105,773 $ 23,141 $ 128,914 EMEA 56,203 18,453 74,656 74,101 18,624 92,725 APAC 94,419 10,546 104,965 103,874 8,718 112,592 Total net sales (1) $ 253,735 $ 47,594 $ 301,329 $ 283,748 $ 50,483 $ 334,231 (1) Net sales contains hedging gains and losses, which do not represent revenues recognized from customers.  Six Months Ended June 30, (In thousands) (Unaudited)  2020 2019 Net sales: Point-in-Time (1) Over Time Total Point-in-Time (1) Over Time Total Americas $ 208,412 $ 38,313 $ 246,725 $ 205,454 $ 46,115 $ 251,569 EMEA 123,896 37,489 161,385 146,569 37,749 184,318 APAC 181,607 20,992 202,599 191,978 17,440 209,418 Total net sales (1) $ 513,915 $ 96,794 $ 610,709 $ 544,001 $ 101,304 $ 645,305 (1) Net sales contains hedging gains and losses, which do not represent revenues recognized from customers.
Schedule of Changes in Deferred Revenue, Current and Non-Current	Changes in deferred revenue, current and non-current, during the six months ended June 30, 2020 were as follows:  Amount  (In thousands) Balance as of December 31, 2019 $ 164,925 Deferral of revenue billed in current period, net of recognition 74,985 Recognition of revenue deferred in prior periods (77,380) Divestiture of AWR subsidiary (15,296) Foreign currency translation impact (981) Balance as of June 30, 2020 (unaudited) $ 146,253

Short-term investments (Tables)

Short-term investments (Tables)	6 Months Ended
	Jun. 30, 2020
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Schedule of Available-for-sale Securities Reconciliation	The following tables summarize unrealized gains and losses related to our short-term investments designated as available-for-sale debt securities:  As of June 30, 2020 (In thousands) (Unaudited)  Gross Gross  Adjusted Cost Unrealized Gain Unrealized Loss Fair Value Corporate bonds $ 136,698 $ 467 $ (61) $ 137,104 Total Short-term investments $ 136,698 $ 467 $ (61) $ 137,104 (In thousands) As of December 31, 2019  Gross Gross  Adjusted Cost Unrealized Gain Unrealized Loss Fair Value Corporate bonds $ 237,423 $ 628 $ (68) $ 237,983 Total Short-term investments $ 237,423 $ 628 $ (68) $ 237,983
Investments Classified by Contractual Maturity Date	The following tables summarize the contractual maturities of our short-term investments designated as available-for-sale debt securities:  As of June 30, 2020 (In thousands) (Unaudited)  Adjusted Cost Fair Value Due in less than 1 year $ 99,137 $ 99,500 Due in 1 to 5 years 37,561 37,604 Total available-for-sale debt securities $ 136,698 $ 137,104  Due in less than 1 year Adjusted Cost Fair Value Corporate bonds $ 99,137 $ 99,500 Total available-for-sale debt securities $ 99,137 $ 99,500  Due in 1 to 5 years Adjusted Cost Fair Value Corporate bonds $ 37,561 $ 37,604 Total available-for-sale debt securities $ 37,561 $ 37,604

Fair value measurements (Tables

Fair value measurements (Tables)	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis are summarized below:  Fair Value Measurements at Reporting Date Using (In thousands) (Unaudited) Description June 30, 2020 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Cash and cash equivalents available for sale: Money Market Funds $ 64,379 $ 64,379 $ — $ — Short-term investments available for sale: Corporate notes and bonds 137,104 — 137,104 — Derivatives 13,578 — 13,578 — Total Assets $ 215,061 $ 64,379 $ 150,682 $ —  Liabilities Derivatives $ (8,798) $ — $ (8,798) $ — Total Liabilities $ (8,798) $ — $ (8,798) $ — (In thousands) Fair Value Measurements at Reporting Date Using Description December 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Cash and cash equivalents available for sale: Money Market Funds $ 87,397 $ 87,397 $ — $ — Corporate notes and bonds 9,962 — 9,962 — Short-term investments available for sale: Corporate bonds 237,983 — 237,983 — Derivatives 8,209 — 8,209 — Total Assets $ 343,551 $ 87,397 $ 256,154 $ —  Liabilities Derivatives $ (2,872) $ — $ (2,872) $ — Total Liabilities $ (2,872) $ — $ (2,872) $ —

Derivative instruments and he_2

Derivative instruments and hedging activities (Tables)	6 Months Ended
	Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Notional Amounts of Derivative Instruments	We held forward contracts designated as cash flow hedges with the following notional amounts: (In thousands) US Dollar Equivalent  As of June 30, 2020 As of December 31,  (Unaudited) 2019 British pound $ 11,486 $ 13,988 Chinese yuan 41,395 32,970 Euro 197,262 130,122 Hungarian forint 99,198 95,228 Japanese yen 92,429 53,527 Korean won 23,670 24,728 Malaysian ringgit 47,892 32,725 Total forward contracts notional amount $ 513,332 $ 383,288
Summary of Fair Value of Derivative Instruments on Consolidated Balance Sheets	The following tables present the fair value of derivative instruments on our Consolidated Balance Sheets at June 30, 2020 and December 31, 2019, respectively.  Asset Derivatives  June 30, 2020 December 31, 2019 (In thousands) (Unaudited)  Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as hedging instruments Foreign exchange contracts - ST forwards Prepaid expenses and other current assets $ 7,029 Prepaid expenses and other current assets $ 7,039 Foreign exchange contracts - LT forwards Other long-term assets 6,038 Other long-term assets 970 Total derivatives designated as hedging instruments $ 13,067 $ 8,009 Derivatives not designated as hedging instruments Foreign exchange contracts - ST forwards Prepaid expenses and other current assets $ 511 Prepaid expenses and other current assets $ 200 Total derivatives not designated as hedging instruments $ 511 $ 200 Total derivatives $ 13,578 $ 8,209  Liability Derivatives  June 30, 2020 December 31, 2019 (In thousands) (Unaudited)  Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as hedging instruments Foreign exchange contracts - ST forwards Other current liabilities $ (4,098) Other current liabilities $ (2,089)  Foreign exchange contracts - LT forwards Other long-term liabilities (3,954) Other long-term liabilities (351) Total derivatives designated as hedging instruments $ (8,052) $ (2,440)  Derivatives not designated as hedging instruments  Foreign exchange contracts - ST forwards Other current liabilities $ (746) Other current liabilities $ (432) Total derivatives not designated as hedging instruments $ (746) $ (432)  Total derivatives $ (8,798) $ (2,872)
Summary of Derivative Instruments, Gain (Loss)	The following tables present the effect of derivative instruments on our Consolidated Statements of Income for the three months ended June 30, 2020 and 2019, respectively: June 30, 2020 (In thousands) (Unaudited) Derivatives in Cash Flow Hedging Relationship Gain or (Loss) Recognized in OCI on Derivative Location of Gain or (Loss) Reclassified from Accumulated OCI into Income Gain or (Loss) Reclassified from Accumulated OCI into Income Foreign exchange contracts - forwards $ (5,132) Net sales $ 2,726  Foreign exchange contracts - forwards 2,962 Cost of sales (850)  Foreign exchange contracts - forwards 2,096 Operating expenses (637) Total $ (74) $ 1,239 June 30, 2019 (In thousands) (Unaudited) Derivatives in Cash Flow Hedging Relationship Gain or (Loss) Recognized in OCI on Derivative Location of Gain or (Loss) Reclassified from Accumulated OCI into Income Gain or (Loss) Reclassified from Accumulated OCI into Income Foreign exchange contracts - forwards $ (1,350) Net sales $ 2,651  Foreign exchange contracts - forwards (139) Cost of sales (61)  Foreign exchange contracts - forwards 9 Operating expenses (74) Total $ (1,480) $ 2,516 (In thousands) Derivatives not Designated as Hedging Instruments Location of Gain (Loss) Recognized in Income Amount of Gain (Loss) Recognized in Income Amount of Gain (Loss) Recognized in Income  June 30, 2020 June 30, 2019  (Unaudited) (Unaudited) Foreign exchange contracts - forwards Other expense (income) $ (193) (141)  Total $ (193) $ (141) The following tables present the effect of derivative instruments on our Consolidated Statements of Income for the six months ended June 30, 2020 and 2019, respectively: June 30, 2020 (In thousands) (Unaudited) Derivatives in Cash Flow Hedging Relationship Gain or (Loss) Recognized in OCI on Derivative Location of Gain or (Loss) Reclassified from Accumulated OCI into Income Gain or (Loss) Reclassified from Accumulated OCI into Income Foreign exchange contracts - forwards $ 5,724 Net sales $ 5,260  Foreign exchange contracts - forwards (3,798) Cost of sales (1,369)  Foreign exchange contracts - forwards (2,524) Operating expenses (1,082) Total (598) $ 2,809 June 30, 2019 (In thousands) (Unaudited) Derivatives in Cash Flow Hedging Relationship Gain or (Loss) Recognized in OCI on Derivative Location of Gain or (Loss) Reclassified from Accumulated OCI into Income Gain or (Loss) Reclassified from Accumulated OCI into Income Foreign exchange contracts - forwards $ 450 Net sales $ 4,396  Foreign exchange contracts - forwards (409) Cost of sales (41)  Foreign exchange contracts - forwards (309) Operating expenses (45) Total $ (268) $ 4,310 (In thousands) Derivatives not Designated as Hedging Instruments Location of Gain (Loss) Recognized in Income Amount of Gain (Loss) Recognized in Income Amount of Gain (Loss) Recognized in Income  June 30, 2020 June 30, 2019  (Unaudited) (Unaudited) Foreign exchange contracts - forwards Other income (expense) $ 105 (369) Total $ 105 $ (369)

Inventories, net (Tables)

Inventories, net (Tables)	6 Months Ended
	Jun. 30, 2020
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventories, net consist of the following:  June 30, 2020 December 31, (In thousands) (Unaudited) 2019  Raw materials $ 112,248 $ 110,078 Work-in-process 10,920 10,613 Finished goods 86,760 79,719 Total $ 209,928 $ 200,410

Intangible assets and goodwil_2

Intangible assets and goodwill, net (Tables)	6 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	Intangible assets at June 30, 2020 and December 31, 2019 are as follows:  June 30, 2020 (In thousands) (Unaudited) December 31, 2019  Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Capitalized software development costs $ 136,118 $ (91,581) $ 44,537 $ 132,789 $ (76,910) $ 55,879 Acquired technology 65,297 (62,776) 2,521 91,900 (87,917) 3,983 Patents 36,214 (25,296) 10,918 35,609 (23,993) 11,616 Other 37,684 (26,685) 10,999 44,490 (31,885) 12,605 Total $ 275,313 $ (206,338) $ 68,975 $ 304,788 $ (220,705) $ 84,083
Schedule of Goodwill	The carrying amount of goodwill as of June 30, 2020, was as follows:  Amount  (In thousands) Balance as of December 31, 2019 $ 262,242 Foreign currency translation impact 132 Divestiture $ (7,221) Balance as of June 30, 2020 (unaudited) $ 255,153

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2020
Leases [Abstract]
Lease, Cost	The components of operating lease expense were as follows (unaudited): Three Months Ended Six Months Ended (In thousands) June 30, 2020 June 30, 2019 June 30, 2020 June 30, 2019 Operating Lease Cost (a) $ 5,389 $ 5,769 $ 11,071 $ 11,495 (a) includes variable and short-term lease costs
Lessee, Operating Lease, Liability, Maturity	Maturities of lease liabilities as of June 30, 2020 were as follows (unaudited): (In thousands) Years ending December 31, Operating Leases 2020 (Excluding the six months ended June 30, 2020) $ 8,948 2021 14,057 2022 8,755 2023 7,147 2024 6,599 Thereafter 13,720 Total future minimum lease payments 59,226 Less imputed interest (10,988) Total $ 48,238

Comprehensive income (Tables)

Comprehensive income (Tables)	6 Months Ended
	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Summary of Comprehensive Income (Loss)	The accumulated OCI, net of tax, for the six months ended June 30, 2020 and 2019, consisted of the following:  June 30, 2020  (Unaudited) (In thousands) Currency translation adjustment Investments Derivative instruments Accumulated other comprehensive income/(loss) Balance as of December 31, 2019 $ (25,831) $ (85) 4,846 $ (21,070) Current-period other comprehensive (loss) income (1,975) (154) 2,211 82 Reclassified from accumulated OCI into income — — (2,809) (2,809) Income tax (benefit) expense — (56) 124 68 Balance as of June 30, 2020 $ (27,806) $ (183) $ 4,124 $ (23,865)  June 30, 2019  (Unaudited) (In thousands) Currency translation adjustment Investments Derivative instruments Accumulated other comprehensive income/(loss) Balance as of December 31, 2018 $ (22,485) $ (1,308) 6,862 $ (16,931) Current-period other comprehensive (loss) income (802) 1,913 4,042 5,153 Reclassified from accumulated OCI into income — — (4,310) (4,310) Income tax expense (benefit) — 8 (66) (58) Balance as of June 30, 2019 $ (23,287) $ 597 $ 6,660 $ (16,030)

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	The following table presents the amounts outstanding related to our borrowing arrangements discussed above as of June 30, 2020 and December 31, 2019, respectively (unaudited, in thousands): June 30, December 31, 2020 2019 Secured 2020 term loan (effective interest rate of 3.0%) $ 70,000 $ — 2020 revolving loan facility (effective interest rate of 3.0%) 20,000 — Total Debt 90,000 — Less: Unamortized debt issuance costs (1,480) — Less: Current Portion of Total Debt (3,500) — Total Debt, non-current $ 85,020 $ —
Schedule of Cash and Cash Equivalents	The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheet to the amount shown in the condensed consolidated statement of cash flows: June 30, December 31, 2020 2019 (in thousands) Cash and cash equivalents $ 471,205 $ 194,616 Restricted cash 70,000 — Total cash, cash equivalent, and restricted cash $ 541,205 $ 194,616
Restrictions on Cash and Cash Equivalents	The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheet to the amount shown in the condensed consolidated statement of cash flows: June 30, December 31, 2020 2019 (in thousands) Cash and cash equivalents $ 471,205 $ 194,616 Restricted cash 70,000 — Total cash, cash equivalent, and restricted cash $ 541,205 $ 194,616

Commitments and contingencies (

Commitments and contingencies (Tables)	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Schedule of Product Warranty Liability	The warranty reserve for the six months ended June 30, 2020 and 2019 was as follows:  Six Months Ended June 30, (In thousands) (Unaudited)  2020 2019 Balance at the beginning of the period $ 2,561 $ 3,173 Accruals for warranties issued during the period 1,165 1,017 Accruals related to pre-existing warranties 298 (571) Settlements made (in cash or in kind) during the period (1,322) (1,101) Balance at the end of the period $ 2,702 $ 2,518

Restructuring (Tables)

Restructuring (Tables)	6 Months Ended
	Jun. 30, 2020
Restructuring and Related Activities [Abstract]
Summary of Restructuring Related Costs	A summary of the charges in our consolidated statement of operations resulting from our restructuring activities is shown below:  Three Months Ended June 30, Six Months Ended June 30, (In thousands) (Unaudited) (Unaudited)  2020 2019 2020 2019 Cost of sales $ — — $ 20 — Research and development 79 311 4,679 656 Sales and marketing 1,227 2,984 7,542 4,965 General and administrative 247 533 562 1,523 Total restructuring and other related costs $ 1,553 3,828 $ 12,803 7,144
Schedule of Restructuring Reserve	A summary of balance sheet activity related to our restructuring activity is shown below:  Restructuring Liability  (in thousands) Balance as of December 31, 2019 $ 9,527 Income statement expense 12,803 Cash payments (16,834) Balance as of June 30, 2020 $ 5,496

Basis of presentation - Narrati

Basis of presentation - Narrative (Details) - USD ($) $ in Thousands	Jan. 15, 2020	Jun. 30, 2020	Jun. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Disposal gain on sale of business		$ 159,753	$ 0
Business acquisition, transaction costs	$ 1,000
AWR Corporation | Disposal Group, Disposed of by Sale, Not Discontinued Operations
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Proceeds from sale of business	161,000
Disposal gain on sale of business	$ 160,000

Basis of Presentation - Disposa

Basis of Presentation - Disposal Groups, Including Discontinued Operations (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations - AWR Corporation $ in Thousands	Jan. 15, 2020USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash	$ 1,027
Accounts receivable, net	7,233
Prepaid and other current assets	283
Goodwill	7,221
Other non-current assets	556
Total Assets	16,320
Deferred revenue	15,296
Other current liabilities	940
Cumulative translation adjustment	(660)
Total liabilities and stockholders' equity	15,576
Total assets divested, net (including cash)	$ 744

Basis of presentation - Schedul

Basis of presentation - Schedule of Effect From Topic 842 (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Property and equipment, net	$ 247,548	$ 243,717
Operating lease right-of-use assets	63,895	70,407
Operating lease liabilities - current	13,583	13,431
Operating lease liabilities - non-current	34,655	40,650
Other current liabilities	$ 66,818	$ 20,716

Basis of presentation - Sched_2

Basis of presentation - Schedule of Other Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest Income	$ 1,011	$ 2,023	$ 3,310	$ 4,257
Net foreign currency loss	(838)	(1,611)	(1,343)	(1,245)
Other	(1,316)	143	(2,550)	119
Other (expense) income, net	$ (1,143)	$ 555	$ (583)	$ 3,131

Basis of presentation - Sched_3

Basis of presentation - Schedule of Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Weighted average shares outstanding - basic (in shares)	131,014,000	132,062,000	130,813,000	132,156,000
Plus: Common share equivalents
RSUs (in shares)	588,000	911,000	686,000	1,016,000
Weighted average shares outstanding-diluted (in shares)	131,602,000	132,973,000	131,499,000	133,172,000
Anti-dilutive securities excluded from the computation of diluted EPS (in shares)	1,206,000	861,000	249,000	395,800

Basis of presentation - Sched_4

Basis of presentation - Schedule of Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Income taxes payable - current	$ 46,480	$ 6,791
Other	20,338	13,925
Other current liabilities	$ 66,818	$ 20,716

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Total net sales	$ 301,329	$ 334,231	$ 610,709	$ 645,305
Point-in-Time(1)
Disaggregation of Revenue [Line Items]
Total net sales	253,735	283,748	513,915	544,001
Over Time
Disaggregation of Revenue [Line Items]
Total net sales	47,594	50,483	96,794	101,304
Americas
Disaggregation of Revenue [Line Items]
Total net sales	121,708	128,914	246,725	251,569
Americas | Point-in-Time(1)
Disaggregation of Revenue [Line Items]
Total net sales	103,113	105,773	208,412	205,454
Americas | Over Time
Disaggregation of Revenue [Line Items]
Total net sales	18,595	23,141	38,313	46,115
EMEA
Disaggregation of Revenue [Line Items]
Total net sales	74,656	92,725	161,385	184,318
EMEA | Point-in-Time(1)
Disaggregation of Revenue [Line Items]
Total net sales	56,203	74,101	123,896	146,569
EMEA | Over Time
Disaggregation of Revenue [Line Items]
Total net sales	18,453	18,624	37,489	37,749
APAC
Disaggregation of Revenue [Line Items]
Total net sales	104,965	112,592	202,599	209,418
APAC | Point-in-Time(1)
Disaggregation of Revenue [Line Items]
Total net sales	94,419	103,874	181,607	191,978
APAC | Over Time
Disaggregation of Revenue [Line Items]
Total net sales	$ 10,546	$ 8,718	$ 20,992	$ 17,440

Revenue - Change in Deferred Re

Revenue - Change in Deferred Revenue (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)
Movement in Deferred Revenue [Roll Forward]
Deferred revenue at December 31, 2018	$ 164,925
Deferral of revenue billed in current period, net of recognition	74,985
Recognition of revenue deferred in prior periods	(77,380)
Divestiture of AWR subsidiary	(15,296)
Foreign currency translation impact	(981)
Deferred revenue as of September 30, 2019	$ 146,253

Revenue - Performance Obligatio

Revenue - Performance Obligations (Details) $ in Thousands	Jun. 30, 2020USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation	$ 60,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-07-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, percentage	27.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, percentage	39.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, percentage	34.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period

Short-term investments - Unreal

Short-term investments - Unrealized Gains And Losses Related To Cash, Cash Equivalents, And Short-Term Investments Designated As Available-For-Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	$ 136,698	$ 237,423
Gross Unrealized Gain	467	628
Gross Unrealized Loss	(61)	(68)
Fair Value	137,104	237,983
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	136,698	237,423
Gross Unrealized Gain	467	628
Gross Unrealized Loss	(61)	(68)
Fair Value	$ 137,104	$ 237,983

Short-term investments - Contra

Short-term investments - Contractual Maturities Of Short-Term Investments Designated As Available-For-Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost, Due in less than 1 year	$ 99,137
Fair Value, Due in less than 1 year	99,500
Adjusted Cost, Due in 1 to 5 years	37,561
Fair Value, Due in 1 to 5 years	37,604
Adjusted Cost	136,698	$ 237,423
Fair Value	137,104	237,983
Carrying value of equity method investments	15,000
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost, Due in less than 1 year	99,137
Fair Value, Due in less than 1 year	99,500
Adjusted Cost, Due in 1 to 5 years	37,561
Fair Value, Due in 1 to 5 years	37,604
Fair Value	$ 137,104	$ 237,983

Fair value measurements - Sched

Fair value measurements - Schedule of Assets And Liabilities Measured On Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Short-term investments available for sale:
Short-term investments available for sale	$ 137,104	$ 237,983
Derivatives	13,578	8,209
Total Assets	215,061	343,551
Derivatives	(8,798)	(2,872)
Total Liabilities	(8,798)	(2,872)
Short-term investments	$ 137,104	237,983
Available-for-sale contractual maturity (in months)	60 months
Europe
Short-term investments available for sale:
Short-term investments	$ 5,000
Quoted Prices in Active Markets for Identical Assets (Level 1)
Short-term investments available for sale:
Derivatives	0	0
Total Assets	64,379	87,397
Derivatives	0	0
Total Liabilities	0	0
Significant Other Observable Inputs (Level 2)
Short-term investments available for sale:
Derivatives	13,578	8,209
Total Assets	150,682	256,154
Derivatives	(8,798)	(2,872)
Total Liabilities	(8,798)	(2,872)
Significant Unobservable Inputs (Level 3)
Short-term investments available for sale:
Derivatives	0	0
Total Assets	0	0
Derivatives	0	0
Total Liabilities	0	0
Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents available for sale	64,379	87,397
Money Market Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents available for sale	64,379	87,397
Money Market Funds | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents available for sale	0	0
Money Market Funds | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents available for sale	0	0
Corporate bonds
Short-term investments available for sale:
Short-term investments available for sale	137,104	237,983
Corporate bonds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Short-term investments available for sale:
Short-term investments available for sale	0	0
Corporate bonds | Significant Other Observable Inputs (Level 2)
Short-term investments available for sale:
Short-term investments available for sale	137,104	237,983
Corporate bonds | Significant Unobservable Inputs (Level 3)
Short-term investments available for sale:
Short-term investments available for sale	$ 0	0
U.S. treasuries and agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents available for sale		9,962
U.S. treasuries and agencies | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents available for sale		0
U.S. treasuries and agencies | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents available for sale		9,962
U.S. treasuries and agencies | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents available for sale		$ 0

Derivative instruments and he_3

Derivative instruments and hedging activities - Narrative (Details)	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2020USD ($)country	Jun. 30, 2019	Jun. 30, 2020USD ($)country	Dec. 31, 2019USD ($)
Derivative [Line Items]
Number of countries for which entity has operations | country	45		45
Percentage of sales outside of the Americas during the period	60.00%	61.00%
Period of protection against the reduction in value caused by a fluctuation, minimum (in number of years)			1 year
Period of protection against the reduction in value caused by a fluctuation, maximum (in number of years)			3 years
Derivatives, contractual maturities (in months)			39 months	36 months
Foreign currency forward contracts notional amount	$ 513,332,000		$ 513,332,000	$ 383,288,000
Cost of Sales
Derivative [Line Items]
Gains (losses) expected to be reclassified from AOCI to earnings			(1,600,000)
Forward Contracts | Net Sales
Derivative [Line Items]
Gains (losses) expected to be reclassified from AOCI to earnings			6,800,000
Forward Contracts | Operating Expenses
Derivative [Line Items]
Gains (losses) expected to be reclassified from AOCI to earnings			(2,300,000)
Other Derivatives
Derivative [Line Items]
Foreign currency forward contracts notional amount	$ 83,000,000		$ 83,000,000	$ 41,000,000
Maximum | Forward Contracts
Derivative [Line Items]
Percentage of derivative risk hedged	100.00%		100.00%
Duration of derivative contracts entered into by the entity to hedge risk of loss			40 months
Maximum | Other Derivatives
Derivative [Line Items]
Percentage of derivative risk hedged	90.00%		90.00%
Duration of derivative contracts entered into by the entity to hedge risk of loss			90 days

Derivative instruments and he_4

Derivative instruments and hedging activities - Summary Of Notional Amounts Of Derivative Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Derivative [Line Items]
Total forward contracts notional amount	$ 513,332	$ 383,288
British pound
Derivative [Line Items]
Total forward contracts notional amount	11,486	13,988
Chinese yuan
Derivative [Line Items]
Total forward contracts notional amount	41,395	32,970
Euro
Derivative [Line Items]
Total forward contracts notional amount	197,262	130,122
Hungarian forint
Derivative [Line Items]
Total forward contracts notional amount	99,198	95,228
Japanese yen
Derivative [Line Items]
Total forward contracts notional amount	92,429	53,527
Korean won
Derivative [Line Items]
Total forward contracts notional amount	23,670	24,728
Malaysian ringgit
Derivative [Line Items]
Total forward contracts notional amount	$ 47,892	$ 32,725

Derivative instruments and he_5

Derivative instruments and hedging activities - Fair Value Of Derivative Instruments On Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Derivative assets	$ 13,578	$ 8,209
Derivative liability	(8,798)	(2,872)
Derivatives Designated As Hedging Instruments
Derivatives, Fair Value [Line Items]
Derivative assets	13,067	8,009
Derivative liability	(8,052)	(2,440)
Derivatives Designated As Hedging Instruments | Foreign Exchange Contract - Short-Term | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative assets	7,029	7,039
Derivatives Designated As Hedging Instruments | Foreign Exchange Contract - Short-Term | Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	(4,098)	(2,089)
Derivatives Designated As Hedging Instruments | Foreign Exchange Contracts - Long-Term | Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	6,038	970
Derivatives Designated As Hedging Instruments | Foreign Exchange Contracts - Long-Term | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	(3,954)	(351)
Derivatives Not Designated As Hedging Instruments
Derivatives, Fair Value [Line Items]
Derivative assets	511	200
Derivative liability	(746)	(432)
Derivatives Not Designated As Hedging Instruments | Foreign Exchange Contract - Short-Term | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative assets	511	200
Derivatives Not Designated As Hedging Instruments | Foreign Exchange Contract - Short-Term | Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	$ (746)	$ (432)

Derivative instruments and he_6

Derivative instruments and hedging activities - Effect Of Derivative Instruments On Consolidated Statements Of Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivatives Designated As Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative	$ (74)		$ (598)
Gain or (Loss) Recognized in OCI on Derivative		$ (1,480)		$ (268)
Gain or (Loss) Reclassified from Accumulated OCI into Income	1,239	2,516	2,809	4,310
Derivatives Designated As Hedging Instruments | Foreign Exchange Forward | Net Sales
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative	(5,132)		5,724
Gain or (Loss) Recognized in OCI on Derivative		(1,350)		450
Gain or (Loss) Reclassified from Accumulated OCI into Income	2,726	2,651	5,260	4,396
Derivatives Designated As Hedging Instruments | Foreign Exchange Forward | Cost of Sales
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative	2,962		(3,798)
Gain or (Loss) Recognized in OCI on Derivative		(139)		(409)
Gain or (Loss) Reclassified from Accumulated OCI into Income	(850)	(61)	(1,369)	(41)
Derivatives Designated As Hedging Instruments | Foreign Exchange Forward | Operating Expenses
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI on Derivative	2,096		(2,524)
Gain or (Loss) Recognized in OCI on Derivative		9		(309)
Gain or (Loss) Reclassified from Accumulated OCI into Income	(637)	(74)	(1,082)	(45)
Derivatives Not Designated As Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	(193)	(141)	105	(369)
Derivatives Not Designated As Hedging Instruments | Foreign Exchange Forward
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$ (193)	$ (141)	$ 105	$ (369)

Inventories, net (Details)

Inventories, net (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 112,248	$ 110,078
Work-in-process	10,920	10,613
Finished goods	86,760	79,719
Total	$ 209,928	$ 200,410

Intangible assets and goodwil_3

Intangible assets and goodwill, net - Schedule Of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 275,313	$ 304,788
Accumulated Amortization	(206,338)	(220,705)
Net Carrying Amount	68,975	84,083
Capitalized software development costs
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	136,118	132,789
Accumulated Amortization	(91,581)	(76,910)
Net Carrying Amount	44,537	55,879
Acquired technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	65,297	91,900
Accumulated Amortization	(62,776)	(87,917)
Net Carrying Amount	2,521	3,983
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	36,214	35,609
Accumulated Amortization	(25,296)	(23,993)
Net Carrying Amount	10,918	11,616
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	37,684	44,490
Accumulated Amortization	(26,685)	(31,885)
Net Carrying Amount	$ 10,999	$ 12,605

Intangible assets and goodwil_4

Intangible assets and goodwill, net - Narrative (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)segmentreporting_unit	Jun. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 9,300,000	$ 9,100,000	$ 18,700,000	$ 18,100,000
Number of operating segments | segment			1
Number of reporting units | reporting_unit			1
Goodwill impairment			$ 0		$ 0
Capitalized Software Development Costs
Finite-Lived Intangible Assets [Line Items]
Software development costs capitalized	1,300,000	2,200,000	3,300,000	4,600,000
Amortization expense of capitalized software development costs	7,400,000	6,900,000	14,700,000	13,800,000
Costs related to stock based compensation	$ 100,000	$ 0	$ 200,000	$ 100,000
Minimum | Capitalized Software Development Costs
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			3 years
Minimum | Acquired Technology
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			3 years
Minimum | Patents
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			10 years
Maximum | Capitalized Software Development Costs
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			6 years
Maximum | Acquired Technology
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			8 years
Maximum | Patents
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period (in years)			17 years

Intangible assets and goodwil_5

Intangible assets and goodwill, net - Schedule of Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)
Goodwill [Roll Forward]
Balance as of December 31, 2019	$ 262,242
Foreign currency translation impact	132
Divestiture	(7,221)
Balance as of June 30, 2020 (unaudited)	$ 255,153

Leases - Summary of Components

Leases - Summary of Components of Lease Expense and Other Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 5,389	$ 5,769	$ 11,071	$ 11,495
Minimum
Lessee, Lease, Description [Line Items]
Operating leases, weighted average remaining lease term (in years)			1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating leases, weighted average remaining lease term (in years)			94 years
Operating lease, renewal term (in years)	9 years		9 years

Leases - Maturities of Operatin

Leases - Maturities of Operating Lease Liabilities (Details) $ in Thousands	Jun. 30, 2020USD ($)
Leases [Abstract]
2020 (Excluding the six months ended June 30, 2020)	$ 8,948
2020	14,057
2021	8,755
2022	7,147
2023	6,599
Thereafter	13,720
Total future minimum lease payments	59,226
Less imputed interest	(10,988)
Total	$ 48,238

Income taxes (Details)

Income taxes (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Valuation allowance	$ 87,000			$ 87,000		$ 86,000
Unrecognized tax benefits	6,800			6,800		$ 6,700
Gross increase in unrecognized tax benefits, current period	31
Reasonable possibility of future tax benefits	2,900			2,900
Accrued interest related to uncertain tax positions	$ 800			$ 800
Effective income tax rate	29.00%		13.00%	24.00%	12.00%
U.S. federal statutory rate	21.00%		21.00%		21.00%
Hungary statutory tax rate				9.00%
Income tax benefit of tax holiday (in usd per share)		$ 0.01
Hungary
Operating Loss Carryforwards [Line Items]
Foreign income tax benefit	$ 300		$ 1,600	$ 100	$ 2,600
Malaysia
Operating Loss Carryforwards [Line Items]
Income tax benefit of tax holiday, amount	$ 100		$ 800	$ 300	$ 1,300

Comprehensive income (Details)

Comprehensive income (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 1,176,350	$ 1,238,358
Current-period other comprehensive (loss) income	82	5,153
Reclassified from accumulated OCI into income	(2,809)	(4,310)
Income tax expense (benefit)	68	(58)
Ending Balance	1,269,639	1,174,574
Currency translation adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(25,831)	(22,485)
Current-period other comprehensive (loss) income	(1,975)	(802)
Reclassified from accumulated OCI into income	0	0
Income tax expense (benefit)	0	0
Ending Balance	(27,806)	(23,287)
Investments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(85)	(1,308)
Current-period other comprehensive (loss) income	(154)	1,913
Reclassified from accumulated OCI into income	0	0
Income tax expense (benefit)	(56)	8
Ending Balance	(183)	597
Derivative instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	4,846
Current-period other comprehensive (loss) income	2,211
Reclassified from accumulated OCI into income	(2,809)
Income tax expense (benefit)	124
Ending Balance	4,124
Derivative instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance		6,862
Current-period other comprehensive (loss) income		4,042
Reclassified from accumulated OCI into income		(4,310)
Income tax expense (benefit)		(66)
Ending Balance		6,660
Accumulated other comprehensive income/(loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(21,070)	(16,931)
Ending Balance	$ (23,865)	$ (16,030)

Authorized shares of common a_2

Authorized shares of common and preferred stock and stock-based compensation plans (Details) - $ / shares

May 14, 2013

Jun. 30, 2020

Jun. 30, 2019

Jun. 30, 2020

Jun. 30, 2019

May 08, 2020

Dec. 31, 2019

May 14, 2019

May 12, 2015

May 13, 2013

May 11, 2010

May 31, 2005

Jan. 21, 2004

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Additional number of shares reserved for issuance (in shares)

180,000,000

Common stock, authorized (in shares)

360,000,000

360,000,000

360,000,000

360,000,000

360,000,000

Common and preferred stock shares authorized (in shares)

365,000,000

Preferred stock, authorized (in shares)

5,000,000

5,000,000

5,000,000

5,000,000

Preferred stock, par value per share (in usd per share)

$ 0.01

$ 0.01

$ 0.01

$ 0.01

Common stock, par value per share (in usd per share)

$ 0.01

$ 0.01

$ 0.01

$ 0.01

Number of shares reserved for issuance

2,518,416

3,362,304

Preferred stock, issued (in shares)

0

0

0

Preferred stock, outstanding (in shares)

0

0

0

Common stock repurchased (in shares)

503,326

1,114,500

668,199

2,149,598

Common stock repurchased, average cost per share

$ 34.08

$ 41.25

$ 35.44

$ 42.97

Authorized common stock available for repurchase (in shares)

2,331,801

2,331,801

Incentive Plan (2005) | Restricted Stock Plan

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares reserved for issuance

4,050,000

Incentive Plan (2005) | Restricted Stock Plan | One to three year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

3 years

Incentive Plan (2005) | Restricted Stock Plan | Three to Five year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

5 years

Incentive Plan (2005) | Restricted Stock Plan | Ten year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

10 years

Incentive Plan (2010)

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares reserved for issuance

2,518,416

Incentive Plan (2010) | Restricted Stock Plan

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Common stock, authorized (in shares)

3,000,000

Incentive Plan (2010) | Restricted Stock Plan | One to three year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

3 years

Incentive Plan (2010) | Restricted Stock Plan | Three to Five year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

5 years

Incentive Plan (2010) | Restricted Stock Plan | Ten year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

10 years

Incentive Plan (2015)

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares reserved for issuance

567,142

3,000,000

Shares available for grant under 2015 restricted stock plan (in shares)

567,142

Incentive Plan (2015) | Restricted Stock Plan | One to three year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

3 years

Incentive Plan (2015) | Restricted Stock Plan | Three to Five year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

5 years

Incentive Plan (2015) | Restricted Stock Plan | Ten year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

10 years

Incentive Plan (2015) | Restricted Stock Plan | Four year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

4 years

Incentive Plan (2020)

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares reserved for issuance

4,500,000

Shares available for grant under 2015 restricted stock plan (in shares)

5,104,408

5,104,408

Incentive Plan (2020) | Restricted Stock Plan | One to three year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

1 year

Incentive Plan (2020) | Restricted Stock Plan | Three to Five year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

3 years

Incentive Plan (2020) | Restricted Stock Plan | Four year vesting period

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Award vesting period (in years)

4 years

Employee Stock Purchase Plan

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Common stock, authorized (in shares)

3,000,000

Percentage of the lower of the market related to purchase of common stock

85.00%

85.00%

Maximum employee subscription rate

15.00%

15.00%

Common stock reserved for future issuance under employee stock purchase plan (in shares)

3,577,369

3,577,369

Shares issued under employee stock purchase plan (in shares)

508,401

Weighted average purchase price of employees' purchase rights (in usd per share)

$ 33.93

Series A Preferred Stock

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Preferred stock, authorized (in shares)

750,000

Segment and geographic inform_2

Segment and geographic information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)regionsegment	Jun. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of operating segments | segment			1
Number of geographic regions company operates in | region			3
Total revenue	$ 301,329	$ 334,231	$ 610,709	$ 645,305
Property and equipment, net	247,548		247,548		$ 243,717
Outside The United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	185,000	$ 211,000	377,000	$ 409,000
Property and equipment, net	$ 133,000		$ 133,000		$ 130,000

Debt (Details)

Debt (Details) - USD ($)	Jun. 12, 2020	Jun. 30, 2020	Jun. 30, 2019
Line of Credit Facility [Line Items]
Proceeds from issuance of secured debt		$ 70,000,000	$ 0
Letter of Credit | Line of Credit | Wells Fargo Securities, LLC
Line of Credit Facility [Line Items]
Unsecured revolving line of credit	$ 10,000,000
Revolving Credit Facility | Line of Credit | Wells Fargo Securities, LLC
Line of Credit Facility [Line Items]
Unsecured revolving line of credit	145,000,000
Line of credit, accordion feature, higher borrowing capacity feature	105,000,000
Secured Revolving Loan Facility | Line of Credit | Wells Fargo Securities, LLC
Line of Credit Facility [Line Items]
Unsecured revolving line of credit	75,000,000
Secured Term Loan Facility | Line of Credit | Wells Fargo Securities, LLC
Line of Credit Facility [Line Items]
Unsecured revolving line of credit	$ 70,000,000
Line of credit facility, expiration period	60 days
2020 term loan (effective interest rate of 3.0%)
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage		3.00%
Credit Agreement
Line of Credit Facility [Line Items]
Debt instrument, covenant, leverage ratio, maximum	2.75
Debt instrument, covenant, liquidity ratio leverage, minimum	1.25
Minimum | Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Quarterly commitment fee	0.375%
Maximum | Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Quarterly commitment fee	0.50%
Base Rate | Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage	0.50%
Base Rate | Secured Term Loan Facility
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage	1.25%
Base Rate | Minimum | Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Variable interest rate spread	1.25%
Base Rate | Maximum | Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Variable interest rate spread	1.75%
London Interbank Offered Rate | Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, interest rate, stated percentage	1.00%
London Interbank Offered Rate | Minimum | Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Variable interest rate spread	2.25%
Quarterly commitment fee	0.375%
Debt instrument, default interest rate	2.00%
London Interbank Offered Rate | Maximum | Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Variable interest rate spread	2.75%
Quarterly commitment fee	0.50%

Debt - Schedule of Long-term De

Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total Debt	$ 90,000	$ 0
Less: Unamortized debt issuance costs	(1,480)	0
Less: Current Portion of Total Debt	(3,500)	0
Total Debt, non-current	$ 85,020	0
2020 term loan (effective interest rate of 3.0%)
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	3.00%
Total Debt	$ 70,000	0
2020 revolving loan facility (effective interest rate of 3.0%)
Debt Instrument [Line Items]
Total Debt	$ 20,000	$ 0

Debt - Restricted Cash (Details

Debt - Restricted Cash (Details) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Proceeds from issuance of secured debt	$ 70,000,000	$ 0
Cash and cash equivalents	471,205,000		$ 194,616,000
Restricted cash	70,000,000		0
Cash and cash equivalents	$ 541,205,000	$ 191,761,000	$ 194,616,000	$ 259,386,000

Commitments and contingencies -

Commitments and contingencies - Schedule Of Warranty Reserve (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at the beginning of the period	$ 2,561	$ 3,173
Accruals for warranties issued during the period	1,165	1,017
Accruals related to pre-existing warranties	298	(571)
Settlements made (in cash or in kind) during the period	(1,322)	(1,101)
Balance at the end of the period	$ 2,702	$ 2,518

Commitments and contingencies_2

Commitments and contingencies - Narrative (Details) $ in Millions	6 Months Ended
	Jun. 30, 2020USD ($)
Commitments and Contingencies Disclosure [Abstract]
Limited warranty on most hardware products (in number of years)	1 year
Non-cancelable purchase commitments	$ 5.7

Restructuring - Schedule of Res

Restructuring - Schedule of Restructuring Related Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restructuring Cost and Reserve [Line Items]
Total restructuring and other related costs	$ 1,553	$ 3,828	$ 12,803	$ 7,144
Cost of sales
Restructuring Cost and Reserve [Line Items]
Total restructuring and other related costs	0	0	20	0
Research and development
Restructuring Cost and Reserve [Line Items]
Total restructuring and other related costs	79	311	4,679	656
Sales and marketing
Restructuring Cost and Reserve [Line Items]
Total restructuring and other related costs	1,227	2,984	7,542	4,965
General and administrative
Restructuring Cost and Reserve [Line Items]
Total restructuring and other related costs	$ 247	$ 533	$ 562	$ 1,523

Restructuring - Schedule of R_2

Restructuring - Schedule of Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2018			$ 9,527
Income statement expense	$ 1,553	$ 3,828	12,803	$ 7,144
Cash payments			(16,834)
Balance as of September 30, 2019	$ 5,496		$ 5,496

Restructuring - Narrative (Deta

Restructuring - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Restructuring accrual	$ 5,496	$ 9,527

Subsequent Events (Details)

Subsequent Events (Details) - USD ($)	Jul. 02, 2020	Jul. 29, 2020	Jun. 12, 2020	Jan. 15, 2020
Subsequent Event [Line Items]
Business acquisition, transaction costs				$ 1,000,000
Secured Term Loan Facility | Wells Fargo Securities, LLC | Line of Credit
Subsequent Event [Line Items]
Unsecured revolving line of credit			$ 70,000,000
Subsequent Event
Subsequent Event [Line Items]
Dividend payable (in dollars per share)		$ 0.26
Subsequent Event | Secured Term Loan Facility | Wells Fargo Securities, LLC | Line of Credit
Subsequent Event [Line Items]
Unsecured revolving line of credit	$ 70,000,000
Subsequent Event | OptimalPlus Ltd
Subsequent Event [Line Items]
Business acquisition, percentage of voting interests acquired	100.00%
Business combination, consideration transferred	$ 357,000,000
Business combination, acquisition related costs	16,000,000
Business combination, separately recognized transactions, expenses and losses recognized	8,000,000
Business acquisition, transaction costs	$ 3