Condensed Consolidated Statements of Changes in Stockholders' Deficit Statement - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Other Comprehensive Loss	Accumulated Deficit
Balance at beginning (in shares) at Dec. 31, 2021	45,729
Balance at beginning at Dec. 31, 2021	$ 176,962	$ 5	$ 827,028	$ (318)	$ (649,753)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued for stock options and restricted stock units (in shares)		624
Stock Issued During Period, Value, Stock Options Exercised	1,035	$ 0	1,035
Stock Issued During Period, Value, Employee Stock Purchase Plan	1,502		1,502
Common stock issued for employee stock purchase plan (in shares)		49
Tax withholdings related to net share settlements of restricted stock units	(1,505)		(1,505)
APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition			7,785
Stock-based compensation	7,785
Net loss	(39,500)				(39,500)
Other comprehensive loss	(974)			(974)
Balance at end (in shares) at Mar. 31, 2022		46,402
Balance at end at Mar. 31, 2022	$ 145,305	$ 5	835,845	(1,292)	(689,253)
Balance at beginning (in shares) at Dec. 31, 2022	46,719
Balance at beginning at Dec. 31, 2022	$ 45,814	$ 5	855,694	(589)	(809,296)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued for stock options and restricted stock units (in shares)		437
Stock Issued During Period, Value, Stock Options Exercised	20	$ 0	20
Stock Issued During Period, Value, Employee Stock Purchase Plan	1,354		1,354
Common stock issued for employee stock purchase plan (in shares)		172
Tax withholdings related to net share settlements of restricted stock units	(490)		(490)
APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition			7,626
Stock-based compensation	7,626
Net loss	(41,238)				(41,238)
Other comprehensive loss	534			534
Balance at end (in shares) at Mar. 31, 2023		47,328
Balance at end at Mar. 31, 2023	$ 13,620	$ 5	$ 864,204	$ (55)	$ (850,534)