CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Series B Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	AOCI Attributable to Parent	Noncontrolling Interest
Beginning Balances at Dec. 31, 2018	$ 33,700	$ 5	$ 17	$ 444,145	$ (8,153)	$ (404,353)	$ 2,209	$ (170)
Beginning Balances (in shares) at Dec. 31, 2018		5,000,000	15,967,000
Net loss	(1,151)					(1,151)
Unrealized income (loss) from foreign currency translation adjustments	(151)						(151)
Issuance of common stock in connection with acquisition of business	1,635		$ 1	1,634
Issuance of common stock in connection with acquisition of business (shares)			419,000
Issuance of common stock in connection with vesting of stock awards (shares)			859,000
Proceeds of exercise of stock options	13			13
Stock-based compensation	2,650			2,650
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)			(176,000)
Issuance of common stock in connection with warrant exercise (shares)			10,000
Cancellation of holdback shares in connection with acquisition	(340)			(340)
Cancellation of holdback shares in connection with acquisition (shares)			(93,000)
Liquidation of subsidiary with noncontrolling interest	33			(137)			(33)	$ 170
Ending Balances at Dec. 31, 2019	35,466	$ 5	$ 18	447,965	(9,043)	(405,504)	2,025
Ending Balances (in shares) at Dec. 31, 2019		5,000,000	16,986,000
Net 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 of exercise of stock options	$ 13			13
Proceed of exercise of stock options (shares)	2,500		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 Viscount Earnout	489			489
Issuance of common stock in connection with Viscount Earnout, (shares)			157,000
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 shares to non-employees	304			304
Issuance of shares to non-employees (shares)			62,000
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