CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional paid-In capital	Additional paid-In capital Cumulative Effect, Period of Adoption, Adjustment	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated other comprehensive (loss)
Balance, beginning of period (in shares) at Dec. 31, 2018			78,526
Balance, beginning of period at Dec. 31, 2018	$ 621,531		$ 785	$ 123,205		$ 510,863		$ (13,322)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of common stock (in shares)			(333)
Repurchase of common stock	(21,136)		$ (3)	(21,133)
Issuance of common stock for stock compensation plans (in shares)			1,375
Issuance of common stock for stock compensation plans	(44,839)		$ 14	(44,853)
Issuance of common stock under Employee Stock Purchase Plan (in shares)			31
Issuance of common stock under the employee stock purchase plan	2,202			2,202
Stock-based compensation	81,102			81,102
Cash dividends declared	(9,511)					(9,511)
Other comprehensive (loss) income	94							94
Net (loss)	(90,433)					(90,433)
Balance, end of period (in shares) at Dec. 31, 2019			79,599
Balance, end of period at Dec. 31, 2019	$ 539,010		$ 796	140,523		410,919		(13,228)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative-effect adjustment from adoption of ASU 2020-06	Accounting Standards Update 2020-06 [Member]
Equity component of convertible senior notes, net	$ 61,604			61,604
Repurchase of common stock (in shares)			(278)
Repurchase of common stock	(28,274)		$ (3)	(28,271)
Issuance of common stock for stock compensation plans (in shares)			1,536
Issuance of common stock for stock compensation plans	(75,562)		$ 16	(75,578)
Issuance of common stock under Employee Stock Purchase Plan (in shares)			33
Issuance of common stock under the employee stock purchase plan	3,039			3,039
Stock-based compensation	103,115			103,115
Cash dividends declared	(9,667)					(9,667)
Other comprehensive (loss) income	10,280							10,280
Net (loss)	$ (61,373)					(61,373)
Balance, end of period (in shares) at Dec. 31, 2020	80,890		80,890
Balance, end of period at Dec. 31, 2020	$ 542,172	$ (52,205)	$ 809	204,432	$ (61,604)	339,879	$ 9,399	(2,948)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative-effect adjustment from adoption of ASU 2020-06	Accounting Standards Update 2020-06 [Member]
Balance, end of period at Jan. 01, 2021							9,400
Balance, beginning of period (in shares) at Dec. 31, 2020	80,890		80,890
Balance, beginning of period at Dec. 31, 2020	$ 542,172	$ (52,205)	$ 809	204,432	$ (61,604)	339,879	$ 9,399	(2,948)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of common stock (in shares)			(432)
Repurchase of common stock	(53,610)		$ (5)	(53,605)
Issuance of common stock for stock compensation plans (in shares)			1,153
Issuance of common stock for stock compensation plans	(69,925)		$ 12	(69,937)
Issuance of common stock under Employee Stock Purchase Plan (in shares)			101
Issuance of common stock under the employee stock purchase plan	10,554		$ 1	10,553
Stock-based compensation	115,971			115,971
Cash dividends declared	(9,789)					(9,789)
Other comprehensive (loss) income	(4,040)							(4,040)
Net (loss)	$ (63,040)					(63,040)
Balance, end of period (in shares) at Dec. 31, 2021	81,712		81,712
Balance, end of period at Dec. 31, 2021	$ 416,088		$ 817	$ 145,810		$ 276,449		$ (6,988)