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 [Member]
Beginning Balance at Dec. 31, 2019	$ 12,891	$ 339	$ 2,030	$ 10,522	$ 0
Beginning Balance, Shares at Dec. 31, 2019		3,395,521
Stock-based compensation expense	4		4
Net income (loss)	(73)			(73)
Ending Balance at Jun. 30, 2020	12,822	$ 339	2,034	10,449	0
Ending Balance, Shares at Jun. 30, 2020		3,395,521
Beginning Balance at Mar. 31, 2020	12,803	$ 339	2,033	10,431	0
Beginning Balance, Shares at Mar. 31, 2020		3,395,521
Stock-based compensation expense	1		1
Net income (loss)	18			18
Ending Balance at Jun. 30, 2020	12,822	$ 339	2,034	10,449	0
Ending Balance, Shares at Jun. 30, 2020		3,395,521
Beginning Balance at Dec. 31, 2020	12,774	$ 339	2,036	10,398	1
Beginning Balance, Shares at Dec. 31, 2020		3,395,521
Other comprehensive loss	1				1
Stock-based compensation expense	3		3
Net income (loss)	212			212
Ending Balance at Jun. 30, 2021	12,988	$ 339	2,039	10,610	0
Ending Balance, Shares at Jun. 30, 2021		3,395,521
Beginning Balance at Mar. 31, 2021	12,773	$ 339	2,037	10,396	1
Beginning Balance, Shares at Mar. 31, 2021		3,395,521
Other comprehensive loss	1				1
Stock-based compensation expense	2		2
Net income (loss)	214			214
Ending Balance at Jun. 30, 2021	$ 12,988	$ 339	$ 2,039	$ 10,610	$ 0
Ending Balance, Shares at Jun. 30, 2021		3,395,521