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	(4,488)	$ 2		(4,490)
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes, shares		1,787
Foreign currency translation adjustment	257				257
Stock-based compensation	7,258			7,258
Net income (loss)	2,556					2,556
Balances at Jun. 30, 2021	81,957	$ 87		185,809	594	(99,707)
Balances, shares at Jun. 30, 2021		87,116
Balance Treasury, shares at Jun. 30, 2021			1,722
Balance Treasury at Jun. 30, 2021			$ (4,826)
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)
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes	(431)	$ 1		(432)
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes, shares		614
Foreign currency translation adjustment	593				593
Stock-based compensation	4,153			4,153
Net income (loss)	(3,193)					(3,193)
Balances at Jun. 30, 2021	81,957	$ 87		185,809	594	(99,707)
Balances, shares at Jun. 30, 2021		87,116
Balance Treasury, shares at Jun. 30, 2021			1,722
Balance Treasury at Jun. 30, 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	(1,374)	$ 1		(1,375)
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes, shares		871
Foreign currency translation adjustment	(1,946)				(1,946)
Repurchases of treasury shares	(1,192)		$ (1,192)
Repurchases of treasury shares, shares			204
Sale of common stock, net of issuance costs	39,370	$ 9		39,361
Sale of common stock, net of issuance costs, Shares		9,323
Stock-based compensation	5,666			5,666
Net income (loss)	(49,281)					(49,281)
Balances at Jun. 30, 2022	$ 73,162	$ 98		237,306	(1,068)	(148,337)
Balances, shares at Jun. 30, 2022		98,009
Balance Treasury, shares at Jun. 30, 2022	3,597		3,597
Balance Treasury at Jun. 30, 2022	$ 14,837		$ (14,837)
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
Balance Treasury at Mar. 31, 2022			$ (14,837)
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes	38	$ 1		37
Exercise of stock options and common stock issued upon vesting of equity awards, net of shares withheld for employee taxes, shares		234
Foreign currency translation adjustment	(2,065)				(2,065)
Sale of common stock, net of issuance costs	39,370	$ 9		39,361
Sale of common stock, net of issuance costs, Shares		9,323
Stock-based compensation	2,935			2,935
Net income (loss)	(16,697)					(16,697)
Balances at Jun. 30, 2022	$ 73,162	$ 98		$ 237,306	$ (1,068)	$ (148,337)
Balances, shares at Jun. 30, 2022		98,009
Balance Treasury, shares at Jun. 30, 2022	3,597		3,597
Balance Treasury at Jun. 30, 2022	$ 14,837		$ (14,837)