Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock Outstanding [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2019	3,703
Balance at Dec. 31, 2019	$ 19	$ 22,325	$ (25,020)	$ (2,676)
Stock-based compensation		39		39
Restricted share cancellation (in shares)	(2)
Restricted share cancellation
Net loss			(2,837)	(2,837)
Balance (in shares) at Mar. 31, 2020	3,701
Balance at Mar. 31, 2020	$ 19	22,364	(2,837)	(5,474)
Balance (in shares) at Dec. 31, 2020	6,301
Balance at Dec. 31, 2020	$ 32	30,052	(27,529)	2,555
Stock-based compensation		24		24
Net loss			(2,173)	(2,173)
Shares issued in offering, net of issuance costs (in shares)	4,200
Shares issued in offering, net of issuance costs	$ 21	8,824		8,845
Shares issued to Cross River Partners, L.P. in subordinated debt and accrued interest conversion, net of discount (in shares)	602
Shares issued to Cross River Partners, L.P. in subordinated debt and accrued interest conversion, net of discount	$ 3	1,246		1,249
Restricted share issuances (in shares)	330
Restricted share issuances	$ 1	310		311
Balance (in shares) at Mar. 31, 2021	11,433
Balance at Mar. 31, 2021	$ 57	$ 40,456	$ (29,702)	$ 10,811