Unaudited Condensed Consolidated Statements of Changes In Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Balance, beginning of year and end of nine month period (in shares)		(949,000)	(12,808,000)
Balance (in shares) at Dec. 31, 2017		949,000	12,808,000
Balance at Dec. 31, 2017		$ 1,843	$ 128		$ 56,518	$ (61,529)	$ (43)
Exercise of stock options (in shares)	322,500		322,000
Exercise of stock options			$ 3		108
Balance, beginning of year and end of nine month period (in shares)		(949,000)	(12,808,000)
Stock-based compensation					16
Preferred stock dividends declared, net of waived penalties by shareholders					(70)
Net income	$ 1,437					1,437
Balance at Sep. 30, 2018	(1,950)		$ 131		56,572	(60,092)
Balance, beginning of year and end of nine month period (in shares)			(13,130,000)	(362,000)
Balance, beginning of year and end of nine month period (in shares)		(949,000)	(13,259,000)
Balance (in shares) at Dec. 31, 2018		949,000	13,259,000
Balance at Dec. 31, 2018	$ (1,062)	$ 1,843	$ 133		56,609	(59,242)	$ (43)
Exercise of stock options (in shares)	291,000		291,000
Exercise of stock options			$ 2		234
Balance, beginning of year and end of nine month period (in shares)		(949,000)	(13,259,000)
Stock-based compensation					24
Preferred stock dividends declared, net of waived penalties by shareholders					(97)
Net income	$ 4,169					4,169
Balance at Sep. 30, 2019	$ 3,270		$ 135		$ 56,770	$ (55,073)
Balance, beginning of year and end of nine month period (in shares)			(13,550,000)	(362,000)