Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2018	17,089
Balance at Dec. 31, 2018	$ 171	$ 119,764	$ (114,981)	$ 4,954
Net loss			(4,189)	(4,189)
Vesting of restricted stock awards (in shares)	6
Vesting of restricted stock awards		10		10
Stock-based compensation expense related to employee and director stock options		107		107
Stock-based compensation expense related to non-employee and director stock options		7		7
Reclassification of Warrant Liability to Equity		412	(356)	56
Debt discount associated with the convertible note – beneficial conversion feature		184		184
Balance (in shares) at Mar. 31, 2019	17,095
Balance at Mar. 31, 2019	$ 171	120,484	(119,526)	1,129
Balance (in shares) at Dec. 31, 2019	27,938
Balance at Dec. 31, 2019	$ 279	125,718	(125,024)	973
Net loss			(1,582)	(1,582)
Issuance of common stock in connection with exercise of warrants, net of issuance cost (in shares)	299
Issuance of common stock in connection with exercise of warrants, net of issuance cost	$ 3	198		201
Vesting of restricted stock awards (in shares)	2
Vesting of restricted stock awards		2		2
Stock-based compensation expense related to employee and director stock options		45		45
Stock-based compensation expense related to non-employee and director stock options		12		12
Balance (in shares) at Mar. 31, 2020	28,239
Balance at Mar. 31, 2020	$ 282	$ 125,975	$ (126,606)	$ (349)