CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock Series B Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Income
Beginning Balances at Dec. 31, 2019	$ 35,466	$ 5	$ 18	$ 447,965	$ (9,043)	$ (405,504)	$ 2,025
Beginning Balances (in shares) at Dec. 31, 2019		5,000,000	16,986,000
Net income (loss)	(5,105)					(5,105)
Unrealized income (loss) from foreign currency translation adjustments	553						553
Issuance of common stock in connection with vesting of stock awards (shares)			632,000
Proceeds from exercise of stock options	13			13
Proceeds from exercise of stock options			3,000
Stock-based compensation	3,027			3,027
Shares withheld in payment of taxes in connection with net share settlement of restricted stock units	(890)				(890)
Shares withheld in payment of taxes in connection with net share settlement of restricted stock units (shares)			(172,000)
Issuance of common stock in connection with earnout	489			489
Issuance of common stock in connection with Earnout, (shares)			157,000
Issuance of shares to non-employees	304			304
Issuance of shares to non-employees (shares)			62,000
Issuance of common stock in connection with warrant exercise			$ 1	(1)
Issuance of common stock in connection with warrant exercise (shares)			387,000
Issuance of warrants	332			332
Ending Balances at Dec. 31, 2020	34,189	$ 5	$ 19	452,129	(9,933)	(410,609)	2,578
Ending Balances (in shares) at Dec. 31, 2020		5,000,000	18,055,000
Net income (loss)	1,620					1,620
Unrealized income (loss) from foreign currency translation adjustments	(629)						(629)
Issuance of common stock in connection with vesting of stock awards	1		$ 1
Issuance of common stock in connection with vesting of stock awards (shares)			421,000
Proceeds from exercise of stock options	$ 299			299
Proceeds from exercise of stock options	29,934		29,000
Stock-based compensation	$ 2,606			2,606
Shares withheld in payment of taxes in connection with net share settlement of restricted stock units	(1,201)				(1,201)
Shares withheld in payment of taxes in connection with net share settlement of restricted stock units (shares)			(82,000)
Issuance of common stock in connection with warrant exercise (shares)			28,000
Issuance of common stock in connection with public offering	37,627		$ 4	37,623
Issuance of common stock in connection with public offering (shares)			3,779,000
Ending Balances at Dec. 31, 2021	$ 74,512	$ 5	$ 24	$ 492,657	$ (11,134)	$ (408,989)	$ 1,949
Ending Balances (in shares) at Dec. 31, 2021		5,000,000	22,230,000