CONDENSED CONSOLIDATED STATEMENTS OF PREFERRED STOCK AND STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Preferred Stock Series D [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Dec. 31, 2021	$ 0	$ 0	$ 138,832	$ (116,900)	$ 21,932
Balance at beginning, shares at Dec. 31, 2021	0	1,127,917
Issuance of common stock upon vesting of restricted stock units
Issuance of common stock upon vesting of restricted stock units, shares		12,943
Shares withheld for payroll taxes			(25)		(25)
Shares withheld for payroll taxes, shares		(2,633)
Stock-based compensation expense			186		186
Net loss				(2,642)	(2,642)
Ending balance, value at Mar. 31, 2022	$ 0	$ 0	138,993	(119,542)	19,451
Balance at ending, shares at Mar. 31, 2022	0	1,138,227
Beginning balance, value at Dec. 31, 2022	$ 2	$ 0	139,218	(128,380)	10,838
Balance at beginning, shares at Dec. 31, 2022	1	1,139,024
Cash-in-lieu of fractional shares for reverse stock split			(11)		(11)
Cash-in-lieu of fractional shares for reverse stock split, shares		(1,706)
Redemption of preferred stock	$ (2)
Redemption of preferred stock, shares	(1)
Issuance of common stock upon vesting of restricted stock units
Issuance of common stock upon vesting of restricted stock units, shares		18,080
Shares withheld for payroll taxes			(25)		(25)
Shares withheld for payroll taxes, shares		(4,816)
Stock-based compensation expense			111		111
Net loss				(3,602)	(3,602)
Ending balance, value at Mar. 31, 2023	$ 0	$ 0	$ 139,293	$ (131,982)	$ 7,311
Balance at ending, shares at Mar. 31, 2023	0	1,150,582