Computation of Net Loss per Share (Schedule of Calculation of Basic Loss Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Computation Of Net Loss Per Share Schedule Of Calculation Of Basic Loss Per Share
Net loss available to stockholders of the company	$ (29)	$ (24)	$ (56)	$ (114)
Net loss attributable to stockholders of preferred shares	(4)	(4)	(8)	(17)
Net loss used in the calculation of basic loss per share	$ (29)	$ (20)	$ (56)	$ (97)
Net loss per share	$ (0.01)	$ 0	$ (0.01)	$ (0.02)
Weighted average number of common stock used in the calculation of net loss per share	5,153,461	5,153,461	5,153,461	5,153,461