Unaudited Condensed Consolidated Statements of Changes In Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Balance, beginning of quarter and end of quarter (in shares)		(949,000)	(12,808,000)
Balance, beginning of quarter and end of quarter (in shares) at Dec. 31, 2017		949,000	12,808,000
Balance, beginning of quarter and end of quarter at Dec. 31, 2017		$ 1,843	$ 128	$ 56,518	$ (61,529)	$ (107)
Exercise of stock options (in shares)	214,000		214,000
Balance, end of quarter (in shares) at Mar. 31, 2018	362,000		13,022,000	56,567,000
Exercise of stock options			$ 2	$ 68
Balance, end of quarter at Mar. 31, 2018	$ (3,112)		$ 130		(61,183)
Balance, beginning of quarter and end of quarter (in shares)	(362,000)	(949,000)	(12,808,000)	(56,567,000)
Stock-based compensation				$ 5
Preferred stock dividends declared, net of waived penalties by shareholders				$ (24)
Net income	$ 346				346
Balance, beginning of quarter and end of quarter (in shares)	(362,000)		(13,022,000)	(56,567,000)
Balance, beginning of quarter and end of quarter (in shares)		(949,000)	(13,259,000)
Balance, beginning of quarter and end of quarter (in shares) at Dec. 31, 2018		949,000	13,259,000
Balance, beginning of quarter and end of quarter at Dec. 31, 2018	$ (1,062)	$ 1,843	$ 133	$ 56,609	(59,242)	$ (43)
Exercise of stock options (in shares)	266,000		266,000
Balance, end of quarter (in shares) at Mar. 31, 2019	362,000		13,525,000	56,803,000
Exercise of stock options			$ 2	$ 218
Balance, end of quarter at Mar. 31, 2019	$ 81		$ 135		(58,295)
Balance, beginning of quarter and end of quarter (in shares)	(362,000)	(949,000)	(13,259,000)	(56,803,000)
Stock-based compensation				$ 4
Preferred stock dividends declared, net of waived penalties by shareholders				$ (28)
Net income	$ 947				$ 947
Balance, beginning of quarter and end of quarter (in shares)	(362,000)		(13,525,000)	(56,803,000)