Condensed Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock Issued [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2017	$ 12,707	$ 339	$ 2,004	$ 10,352	$ 12
Beginning Balance, Shares at Dec. 31, 2017		3,395,521
Other comprehensive income (loss)	(1)				(1)
Stock-based compensation expense	4		4
Change in accounting policy	0			(7)	7
Net loss	(202)			(202)
Ending Balance at Mar. 31, 2018	12,508	$ 339	2,008	10,143	18
Ending Balance, Shares at Mar. 31, 2018		3,395,521
Beginning Balance at Dec. 31, 2018	12,725	$ 339	2,019	10,335	32
Beginning Balance, Shares at Dec. 31, 2018		3,395,521
Other comprehensive income (loss)	1				1
Stock-based compensation expense	3		3
Net loss	(31)			(31)
Ending Balance at Mar. 31, 2019	$ 12,698	$ 339	$ 2,022	$ 10,304	$ 33
Ending Balance, Shares at Mar. 31, 2019		3,395,521