Consolidated Statements of Shareholder's Equity - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2020		$ 69	$ 268,729	$ (252,058)	$ (500)	$ 16,240
Balance, shares at Dec. 31, 2020	5,659	68,890,819
Exercise of common stock warrants		$ 3	5,649			$ 5,652
Exercise of common stock warrants, shares		3,343,660				3,343,660
Exercising of options			725			$ 725
Exercising of options, shares		446,551				446,551
Vesting of RSUs, shares		16,667
Public offering of common shares, net of offering costs			183			$ 183
Public offering of common shares, net of offering costs, shares		233,793
Stock based compensation			650			650
Net loss				(5,206)		(5,206)
Balance at Dec. 31, 2021		$ 72	275,936	(257,264)	(500)	18,244
Balance, shares at Dec. 31, 2021	5,659	72,931,490
Vesting of RSUs, shares		145,126
Public offering of common shares, net of offering costs		$ 7	5,760			$ 5,767
Public offering of common shares, net of offering costs, shares		7,162,253
Conversion of preferred stock		$ 1	(1)
Conversion of preferred stock, shares	(303)	1,002,647				(1,002,647)
Stock based compensation			887			$ 887
Net loss				(1,103)		(1,103)
Balance at Dec. 31, 2022		$ 80	$ 282,582	$ (258,367)	$ (500)	$ 23,795
Balance, shares at Dec. 31, 2022	5,356	81,241,516