Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]		Preferred Stock [Member] Series B Convertible Preferred Stock [Member]		Preferred Stock [Member] Series C Convertible Preferred Stock [Member]		Additional Paid-in Capital [Member]		Retained Earnings [Member]	Total
Beginning balance, value at Dec. 31, 2020		[1]		[1]		[1]	$ 180,339		$ (168,176)	$ 12,163
Beginning balance, shares at Dec. 31, 2020	3,284,322		17,303		2,343
Net loss									(6,750)	(6,750)
Issuance of common stock, including at the market offering net of $2,024 issuance costs	$ 1						25,241			25,242
Issuance of common shares, including at the market offering net of issuance costs, shares	3,133,775
Exercise of Warrants F		[1]					8,120			8,120
Exercise of Warrants F, shares	1,093,536
Exercise of Warrants G		[1]					1,349			1,349
Exercise of Warrants G, shares	131,876
Conversion of Series B Convertible Preferred Stock to common stock		[1]		[1]				[1]			[1]
Conversion of Series B Convertible Preferred Stock to common stock, shares	207,528		(17,303)
Conversion of Series C Convertible Preferred Stock to common stock		[1]				[1]		[1]			[1]
Conversion of Series C Convertible Preferred Stock to common stock, shares	831				(625)
Share-based compensation related to restricted stock, restricted stock units and stock options award		[1]					706			706
Share-based compensation related to restricted stock, restricted stock units and stock options award, net of forfeitures, shares	15,083
Round up of shares due to reverse stock split effectuated on April 26, 2021		[1]
Round up of shares due to reverse stock split, shares										47,388
Ending balance, value at Jun. 30, 2021	$ 1					[1]	215,755		(174,926)	$ 40,830
Ending balance, shares at Jun. 30, 2021	7,914,339				1,718
Beginning balance, value at Mar. 31, 2021	$ 1					[1]	215,372		(171,419)	43,954
Beginning balance, shares at Mar. 31, 2021	7,852,791				1,718
Net loss									(3,507)	(3,507)
Share-based compensation related to restricted stock, restricted stock units and stock options award		[1]					383			383
Share-based compensation related to restricted stock, restricted stock units and stock options award, net of forfeitures, shares	14,160
Round up of shares due to reverse stock split effectuated on April 26, 2021		[1]
Round up of shares due to reverse stock split, shares	47,388
Ending balance, value at Jun. 30, 2021	$ 1					[1]	215,755		(174,926)	40,830
Ending balance, shares at Jun. 30, 2021	7,914,339				1,718
Beginning balance, value at Dec. 31, 2021	$ 1					[1]	216,625		(183,094)	33,532
Beginning balance, shares at Dec. 31, 2021	8,296,256				1,718
Net loss									(9,117)	(9,117)
Share-based compensation related to restricted stock, restricted stock units and stock options award		[1]					1,327			1,327
Share-based compensation related to restricted stock, restricted stock units and stock options award, net of forfeitures, shares	26,944
Ending balance, value at Jun. 30, 2022	$ 1					[1]	217,952		(192,211)	25,742
Ending balance, shares at Jun. 30, 2022	8,323,200				1,718
Beginning balance, value at Mar. 31, 2022	$ 1					[1]	217,278		(187,575)	29,704
Beginning balance, shares at Mar. 31, 2022	8,317,876				1,718
Net loss									(4,636)	(4,636)
Share-based compensation related to restricted stock, restricted stock units and stock options award		[1]					674			674
Share-based compensation related to restricted stock, restricted stock units and stock options award, net of forfeitures, shares	5,324
Ending balance, value at Jun. 30, 2022	$ 1					[1]	$ 217,952		$ (192,211)	$ 25,742
Ending balance, shares at Jun. 30, 2022	8,323,200				1,718

[1] Represents an amount less than $1 thousand