CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Adjustment Additional Paid-in-Capital	Adjustment Accumulated Deficit	Adjustment	Common Stock	Additional Paid-in-Capital	Accumulated Other Comprehensive Income (loss)	Accumulated Deficit	Treasury Stock	Total
Balance at Dec. 31, 2020	$ (81,553)	$ (5,560)	$ (87,113)	$ 45	$ 976,590	$ 1,004	$ (310,058)	$ (132)	$ 667,449
Balance (in shares) at Dec. 31, 2020				45,275
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2020								(28)
Stockholders' Deficit
Common stock issued under stock plans				$ 1	17,034				17,035
Common stock issued under stock plans (in shares)				741
Stock-based compensation					8,748				8,748
Other comprehensive income (loss)						124			124
Net loss							(16,469)		(16,469)
Balance at Mar. 31, 2021				$ 46	920,819	1,128	(332,087)	$ (132)	589,774
Balance (in shares) at Mar. 31, 2021				46,016
Treasury Stock, Shares, Ending Balance at Mar. 31, 2021								(28)
Balance at Dec. 31, 2020	$ (81,553)	$ (5,560)	$ (87,113)	$ 45	976,590	1,004	(310,058)	$ (132)	667,449
Balance (in shares) at Dec. 31, 2020				45,275
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2020								(28)
Stockholders' Deficit
Other comprehensive income (loss)									(17)
Net loss									(27,721)
Balance at Sep. 30, 2021				$ 47	943,486	987	(343,339)	$ (132)	601,049
Balance (in shares) at Sep. 30, 2021				46,892
Treasury Stock, Shares, Ending Balance at Sep. 30, 2021								(28)
Balance at Mar. 31, 2021				$ 46	920,819	1,128	(332,087)	$ (132)	589,774
Balance (in shares) at Mar. 31, 2021				46,016
Treasury Stock, Shares, Beginning Balance at Mar. 31, 2021								(28)
Stockholders' Deficit
Common stock issued under stock plans					4,525				4,525
Common stock issued under stock plans (in shares)				481
Stock-based compensation					7,984				7,984
Other comprehensive income (loss)						(476)			(476)
Net loss							(17,482)		(17,482)
Balance at Jun. 30, 2021				$ 46	933,328	652	(349,569)	$ (132)	584,325
Balance (in shares) at Jun. 30, 2021				46,497
Treasury Stock, Shares, Ending Balance at Jun. 30, 2021								(28)
Stockholders' Deficit
Common stock issued under stock plans				$ 1	3,969				3,970
Common stock issued under stock plans (in shares)				395
Stock-based compensation					6,189				6,189
Other comprehensive income (loss)						335			335
Net loss							6,230		6,230
Balance at Sep. 30, 2021				$ 47	943,486	987	(343,339)	$ (132)	601,049
Balance (in shares) at Sep. 30, 2021				46,892
Treasury Stock, Shares, Ending Balance at Sep. 30, 2021								(28)
Balance at Dec. 31, 2021				$ 47	952,432	15	(365,211)	$ (132)	$ 587,151
Balance (in shares) at Dec. 31, 2021				46,993					46,965
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2021								(28)	(28)
Stockholders' Deficit
Common stock issued under stock plans					1,515				$ 1,515
Common stock issued under stock plans (in shares)				124
Stock-based compensation					6,923				6,923
Other comprehensive income (loss)						(3,402)			(3,402)
Net loss							5,377		5,377
Balance at Mar. 31, 2022				$ 47	960,870	(3,387)	(359,834)	$ (132)	597,564
Balance (in shares) at Mar. 31, 2022				47,117
Treasury Stock, Shares, Ending Balance at Mar. 31, 2022								(28)
Balance at Dec. 31, 2021				$ 47	952,432	15	(365,211)	$ (132)	$ 587,151
Balance (in shares) at Dec. 31, 2021				46,993					46,965
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2021								(28)	(28)
Stockholders' Deficit
Other comprehensive income (loss)									$ (3,838)
Net loss									(67,735)
Balance at Sep. 30, 2022				$ 48	985,407	(3,823)	(432,946)	$ (132)	$ 548,554
Balance (in shares) at Sep. 30, 2022				47,693					47,665
Treasury Stock, Shares, Ending Balance at Sep. 30, 2022								(28)	(28)
Balance at Mar. 31, 2022				$ 47	960,870	(3,387)	(359,834)	$ (132)	$ 597,564
Balance (in shares) at Mar. 31, 2022				47,117
Treasury Stock, Shares, Beginning Balance at Mar. 31, 2022								(28)
Stockholders' Deficit
Common stock issued under stock plans				$ 1	237				238
Common stock issued under stock plans (in shares)				331
Stock-based compensation					10,539				10,539
Other comprehensive income (loss)						(328)			(328)
Net loss							(45,536)		(45,536)
Balance at Jun. 30, 2022				$ 48	971,646	(3,715)	(405,370)	$ (132)	562,477
Balance (in shares) at Jun. 30, 2022				47,448
Treasury Stock, Shares, Ending Balance at Jun. 30, 2022								(28)
Stockholders' Deficit
Common stock issued under stock plans					4,350				4,350
Common stock issued under stock plans (in shares)				245
Stock-based compensation					9,411				9,411
Other comprehensive income (loss)						(108)			(108)
Net loss							(27,576)		(27,576)
Balance at Sep. 30, 2022				$ 48	$ 985,407	$ (3,823)	$ (432,946)	$ (132)	$ 548,554
Balance (in shares) at Sep. 30, 2022				47,693					47,665
Treasury Stock, Shares, Ending Balance at Sep. 30, 2022								(28)	(28)