CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Balances at Dec. 31, 2020	$ 76,374	$ 85		$ 183,041	$ 337	$ (102,263)
Balances, shares at Dec. 31, 2020		85,329
Balance Treasury, shares at Dec. 31, 2020			1,722
Balance Treasury at Dec. 31, 2020			$ (4,826)
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes	(4,057)	$ 1		(4,058)
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes, shares		1,173
Foreign currency translation adjustment	(336)				(336)
Stock-based compensation	3,105			3,105
Net income (loss)	5,749					5,749
Balances at Mar. 31, 2021	80,835	$ 86		182,088	1	(96,514)
Balances, shares at Mar. 31, 2021		86,502
Balance Treasury, shares at Mar. 31, 2021			1,722
Balance Treasury at Mar. 31, 2021			$ (4,826)
Balances at Dec. 31, 2021	$ 81,919	$ 88		193,654	878	(99,056)
Balances, shares at Dec. 31, 2021		87,815
Balance Treasury, shares at Dec. 31, 2021	3,393		3,393
Balance Treasury at Dec. 31, 2021	$ 13,645		$ (13,645)
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes	(1,412)			(1,412)
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes, shares		637
Foreign currency translation adjustment	119				119
Repurchases of treasury shares	(1,192)		$ (1,192)
Repurchases of treasury shares, shares			204
Stock-based compensation	2,731			2,731
Net income (loss)	(32,584)					(32,584)
Balances at Mar. 31, 2022	$ 49,581	$ 88		$ 194,973	$ 997	$ (131,640)
Balances, shares at Mar. 31, 2022		88,452
Balance Treasury, shares at Mar. 31, 2022	3,597		3,597
Balance Treasury at Mar. 31, 2022	$ 14,837		$ (14,837)