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	Accumulated deficit	Accumulated deficit Cumulative effect, period of adoption, adjustment	Accumulated other comprehensive gain (loss)
Balance (in shares) at Dec. 31, 2019			112,131
Balance at Dec. 31, 2019	$ 975,373		$ 112	$ 1,261,142		$ (285,789)		$ (92)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(40,471)					(40,471)
Foreign currency translation adjustment	24							24
Unrealized loss on marketable securities, net of tax	(13)							(13)
Issuance of common stock upon exercise of options, equity stock and stock units, and employee stock purchase plan (in shares)			2,183
Issuance of common stock upon exercise of options, equity stock and employee stock purchase plan	2,084		$ 3	2,081
Repurchase and retirement of common stock under repurchase plan, shares			(2,616)
Repurchase and retirement of common stock under repurchase plan, value	(50,069)		$ (3)	(18,575)		(31,491)
Stock-based compensation	25,778			25,778
Balance (in shares) at Dec. 31, 2020			111,698
Balance at Dec. 31, 2020	912,706		$ 112	1,270,426		(357,751)		(81)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	18,334					18,334
Foreign currency translation adjustment	(366)							(366)
Unrealized loss on marketable securities, net of tax	(1,005)							(1,005)
Issuance of common stock upon exercise of options, equity stock and stock units, and employee stock purchase plan (in shares)			1,745
Issuance of common stock upon exercise of options, equity stock and employee stock purchase plan	(1,656)		$ 1	(1,657)
Stock Issued During Period, Shares, Acquisitions			300
Stock Issued During Period, Value, Acquisitions	6,978			6,978
Repurchase and retirement of common stock under repurchase plan, shares			(4,451)
Repurchase and retirement of common stock under repurchase plan, value	(100,081)		$ (4)	(4,267)		(95,810)
Stock-based compensation	27,486			27,486
Balance (in shares) at Dec. 31, 2021			109,292
Balance at Dec. 31, 2021	862,396		$ 109	1,298,966		(435,227)		(1,452)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(14,310)					(14,310)
Foreign currency translation adjustment	(958)							(958)
Unrealized loss on marketable securities, net of tax	(2,553)							(2,553)
Issuance of common stock upon exercise of options, equity stock and stock units, and employee stock purchase plan (in shares)			1,513
Issuance of common stock upon exercise of options, equity stock and employee stock purchase plan	(12,277)		$ 2	(12,279)
Repurchase and retirement of common stock under repurchase plan, shares			(3,195)
Repurchase and retirement of common stock under repurchase plan, value	(100,421)		$ (3)	(10,278)		(90,140)
Stock-based compensation	35,552			35,552
Adjustments to Additional Paid in Capital, Retirement of Convertible Senior Note Hedges	78,415			78,415
Adjustments to Additional Paid in Capital, Retirement of Warrants	(58,423)			(58,423)
Balance (in shares) at Dec. 31, 2022			107,610
Balance at Dec. 31, 2022	$ 779,297		$ 108	$ 1,297,408		$ (513,256)		$ (4,963)
Balance (Accounting Standards Update 2020-06) at Dec. 31, 2022		$ (8,124)			$ (34,545)		$ 26,421