Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Series E Preferred Stock [Member]	Series F Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid in Capital Warrants [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Dec. 31, 2018			$ 65	$ (5,384)	$ 34,094	$ (25,848)	$ 2,927
Balance, shares at Dec. 31, 2018	3,488	381	10,761,684
Accrued dividend						(1,516)	(1,516)
Conversion of Series E Preferred stock for common stock						4	4
Conversion of Series E Preferred stock for common stock, shares	(10)		107,846
Repurchase of Series F Preferred stock				(100)		11	(89)
Repurchase of Series F Preferred stock, shares		(20)
Share based compensation				765			765
Net loss						(11,978)	(11,978)
Ending balance, value at Dec. 31, 2019			$ 65	(4,719)	34,094	(39,327)	(9,887)
Balance, shares at Dec. 31, 2019	3,478	361	10,869,530
Accrued dividend						(1,540)	(1,540)
Conversion of Series E Preferred stock for common stock			$ 2			21	23
Conversion of Series E Preferred stock for common stock, shares	(20)		243,179
Share based compensation				8			8
Issuance of warrants					294		294
Benefical conversion feature-term loans				95			95
Net loss						(3,766)	(3,766)
Ending balance, value at Dec. 31, 2020			$ 67	$ (4,616)	$ 34,388	$ (44,612)	$ (14,773)
Balance, shares at Dec. 31, 2020	3,458	361	11,112,709