Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common stock	APIC	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020		99,690,942
Beginning balance at Dec. 31, 2020	$ 382,782	$ 10	$ 738,290	$ (355,518)
Increase (Decrease) in Stockholders' Equity
Net loss	(8,418)			(8,418)
Repurchase of common stock (in shares)		(1,683,692)
Repurchase of common stock	(7,829)		(7,829)
Stock-based compensation	6,732		6,732
Shares issued in connection with employee stock plans, net of shares withheld for employee taxes (in shares)		660,311
Shares issued in connection with employee stock plan, net of shares withheld for employee taxes	(1,075)		(1,075)
Ending balance (in shares) at Mar. 31, 2021		98,667,561
Ending balance at Mar. 31, 2021	$ 372,192	$ 10	736,118	(363,936)
Beginning balance (in shares) at Dec. 31, 2021	96,213,243	96,213,243
Beginning balance at Dec. 31, 2021	$ 329,786	$ 10	723,623	(393,847)
Increase (Decrease) in Stockholders' Equity
Net loss	(12,414)			(12,414)
Repurchase of common stock (in shares)		(3,107,370)
Repurchase of common stock	(11,028)		(11,028)
Stock-based compensation	3,744		3,744
Shares issued in connection with employee stock plans, net of shares withheld for employee taxes (in shares)		481,122
Shares issued in connection with employee stock plan, net of shares withheld for employee taxes	$ (861)		(861)
Ending balance (in shares) at Mar. 31, 2022	93,586,995	93,586,995
Ending balance at Mar. 31, 2022	$ 309,227	$ 10	$ 715,478	$ (406,261)