Consolidated Statements Of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Paid-In Capital [Member]	Accumulated Deficit [Member]	Total
Balance, value at Dec. 31, 2018	$ 1	$ 58,286	$ (51,520)	$ 6,767
Balance, shares at Dec. 31, 2018	886,608
Net loss			(436)	(436)
Compensation expense related to stock issued		17		$ 17
Compensation expense related to stock issued, shares	1,624
Balance, shares at Dec. 31, 2019	888,231			888,231
Balance, value at Dec. 31, 2019	$ 1	58,303	(51,956)	$ 6,348
Net loss			(3,648)	(3,648)
Compensation expense related to stock issued		14		14
Compensation expense related to stock issued, shares	2,137
Common stock issued for exercise of options, value		1		$ 1
Common stock issued for exercise of options, shares	52			52
Balance, shares at Dec. 31, 2020	890,420			890,420
Balance, value at Dec. 31, 2020	$ 1	$ 58,318	$ (55,604)	$ 2,715