CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Common Stock Warrants [Member]	Additional Paid in Capital [Member]	Retained Deficit [Member]	Accumu-lated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2015	$ 46,708	$ 764	$ 13,965	$ (15,023)	$ (327)	$ 46,087
Balance,(in shares) at Dec. 31, 2015	23,354
Balance at Dec. 31, 2015	$ 46,708	764	13,965	(15,023)	(327)	46,087
Balance,(in shares) at Dec. 31, 2015	23,354
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				958		958
Exercise of Common Stock Warrants	$ 1					1
Other comprehensive income (loss), net of tax					(129)	(129)
Balance at Dec. 31, 2016	$ 46,709	764	13,965	(14,065)	(456)	$ 46,917
Balance,(in shares) at Dec. 31, 2016	23,354					23,354,457
Balance at Dec. 31, 2016	$ 46,709	764	13,965	(14,065)	(456)	$ 46,917
Balance,(in shares) at Dec. 31, 2016	23,354					23,354,457
Balance at Dec. 31, 2016	$ 46,709	764	13,965	(14,065)	(456)	$ 46,917
Balance,(in shares) at Dec. 31, 2016	23,354					23,354,457
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				3,094		$ 3,094
Exercise of Common Stock Warrants	$ 1,272	(551)	392			1,113
Exercise of Common Stock Warrants,(in shares)	637
Expiration of common stock warrants		$ (213)	213
Retirement of common stock	$ (137)			26		(111)
Retirement of common stock, (in shares)	(69)
Other comprehensive income (loss), net of tax					(40)	(40)
Reclassification of accumulated other comprehensive loss due to tax rate change				98	(98)
Balance at Dec. 31, 2017	$ 47,844		14,570	(10,847)	(594)	$ 50,973
Balance,(in shares) at Dec. 31, 2017	23,922					23,922,086
Balance at Dec. 31, 2017	$ 47,844		$ 14,570	$ (10,847)	$ (594)	$ 50,973
Balance,(in shares) at Dec. 31, 2017	23,922					23,922,086