CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ 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	16,986
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
Proceeds from exercise of stock options	13			13
Proceeds from exercise of stock options			3
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)
Issuance of common stock in connection with earnout	489			489
Issuance of common stock in connection with earnout (shares)			157
Issuance of shares to non-employees	304			304
Issuance of shares to non-employees (shares)			62
Issuance of common stock in connection with warrant exercise			$ 1	(1)
Issuance of common stock in connection with warrant exercise (shares)			387
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	18,055
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
Proceeds from exercise of stock options	299			299
Proceeds from exercise of stock options			29
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)
Issuance of common stock in connection with warrant exercise (shares)			28
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
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	22,230
Net income (loss)	(392)					(392)
Unrealized income (loss) from foreign currency translation adjustments	(848)						(848)
Issuance of common stock in connection with vesting of stock awards (shares)			461
Stock-based compensation	3,161			3,161
Shares withheld in payment of taxes in connection with net share settlement of restricted stock units	(1,039)				(1,039)
Shares withheld in payment of taxes in connection with net share settlement of restricted stock units (shares)			(68)
Ending Balances at Dec. 31, 2022	$ 75,394	$ 5	$ 24	$ 495,818	$ (12,173)	$ (409,381)	$ 1,101
Ending Balances (in shares) at Dec. 31, 2022		5,000	22,623