Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Series A Convertible Preferred Stock [Member]	Series B Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]	Total
Balance at beginning at Dec. 31, 2018			$ 2	$ 60,945	$ (113)	$ (59,264)	$ 1,570
Balance at beginning (in shares) at Dec. 31, 2018	304,778	0.85	2,045,311
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Series A Convertible Preferred Stock (in shares)	(304,778)		121,911
Cashless Exercise of Warrants (in shares)			1,435
Fair value of stock options				423			423
Restricted Stock Awards				239			239
Restricted Stock Awards (in shares)			20,000
Common stock issued for services				138			138
Common stock issued for services (in shares)			23,455
Common stock issued in relation to Bridge Financing				70			70
Common stock issued in relation to Bridge Financing (in shares)			20,000
Net loss						(2,507)	(2,507)
Balance at ending at Dec. 31, 2019			$ 2	61,815	(113)	(61,771)	(67)
Balance at ending (in shares) at Dec. 31, 2019		0.85	2,232,112
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Fair value of stock options				704			704
Restricted Stock Awards			$ 1	580			581
Restricted Stock Awards (in shares)			267,500
Common stock issued for services				43			43
Common stock issued for services (in shares)			10,944
Restricted Stock Units				53			53
Restricted Stock Units (in shares)			15,000
Fair value of warrants issued for services				51			51
Common Stock in relation to conversion of 2020 Debentures, interest expense and cancellation of warrants				67			67
Common Stock in relation to conversion of 2020 Debentures, interest expense and cancellation of warrants (in shares)			19,208
Beneficial conversion feature in connection with 2020 Debentures				650			650
Warrants issued in connection with 2020 Debentures				1,063			1,063
Common Stock in relation to conversion of 2020 Debentures, interest expense and cancellation of warrants			$ 1	2,052			2,053
Common Stock in relation to conversion of 2020 Debentures, interest expense and cancellation of warrants (in shares)			816,713
Common Stock issued in relation to public offering of securities			$ 2	9,021			9,023
Common Stock issued in relation to public offering of securities (in shares)			2,223,913
Common stock issued for services related to Public Offering (in shares)			30,888
Cancellation of common stock (in shares)			(19,401)
Net loss						(5,902)	(5,902)
Balance at ending at Dec. 31, 2020			$ 6	$ 76,099	$ (113)	$ (67,673)	$ 8,319
Balance at ending (in shares) at Dec. 31, 2020		0.85	5,596,877