CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Series D and E Preferred Stock	Preferred Stock Series A-2 Preferred Stock	Preferred Stock Series D Preferred Stock	Preferred Stock Series E Preferred Stock	Common Stock	Common Stock Series A-2 Preferred Stock	Common Stock Series D and E Preferred Stock	Treasury Stock	Additional Paid-In Capital	Additional Paid-In Capital Series D and E Preferred Stock	Accumulated Deficit
Beginning Balance (in shares) at Dec. 31, 2020			45	1,697,958	131,579	7,861,912			113,283
Beginning Balance at Dec. 31, 2020	$ 22,057		$ 0	$ 0	$ 0	$ 1			$ (181)	$ 215,092		$ (192,855)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,433)											(3,433)
Stock-based compensation	33									33
Preferred stock conversion (in shares)			(45)	(1,697,022)	(131,579)		84,292	18,762,119
Conversion of Series D and E Preferred Stock		$ 0						$ 2			$ (2)
Issuance of stock for services (in shares)						21,008
Issuance of stock for services	274									274
Forfeited restricted stock (in shares)				(81)
Series D Preferred Stock exchanged for taxes (in shares)				(855)
Ending Balance (in shares) at Mar. 31, 2021			0	0	0	26,729,331			113,283
Ending Balance at Mar. 31, 2021	18,931		$ 0	$ 0	$ 0	$ 3			$ (181)	215,397		(196,288)
Beginning Balance (in shares) at Dec. 31, 2021						30,929,331			113,283
Beginning Balance at Dec. 31, 2021	25,497					$ 3			$ (181)	227,581		(201,906)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(4,539)											(4,539)
Stock-based compensation	52									52
Forfeiture of vested stock options	(84)									(84)
Ending Balance (in shares) at Mar. 31, 2022						30,929,331			113,283
Ending Balance at Mar. 31, 2022	$ 20,926					$ 3			$ (181)	$ 227,549		$ (206,445)