Condensed Consolidated Statements of Stockholders Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock (Deficit)	Total
Beginning Balance, shares at Dec. 31, 2015	13,730,562
Beginning Balance, amount at Dec. 31, 2015	$ 8,238	$ 24,926	$ 1,259	$ 397	$ 0	$ 34,820
Common stock options exercised and issued, shares	24,187
Common stock options exercised and issued, amount	$ 15	15				30
Share-based compensation expense		49				49
Restricted stock unit compensation expense						0
Realized tax benefit from stock option exercise		392				392
Dividends declared			(3,708)			(3,708)
Net income (loss)			2,689			2,689
Unrealized gain on available-for-sale securities				1,664		1,664
Repurchase of common stock					(162)	(162)
Ending Balance, shares at Dec. 31, 2016	13,754,749
Ending Balance, amount at Dec. 31, 2016	$ 8,253	25,382	240	2,061	(162)	35,774
Common stock options exercised and issued, shares	89,835
Common stock options exercised and issued, amount	$ 54	129				183
Share-based compensation expense		55				55
Restricted stock unit compensation expense		76				76
Realized tax benefit from stock option exercise						0
Dividends declared			(2,064)			(2,064)
Net income (loss)			(3,626)			(3,626)
Unrealized gain on available-for-sale securities				2,257		2,257
Repurchase of common stock					(648)	(648)
Ending Balance, shares at Dec. 31, 2017	13,844,584
Ending Balance, amount at Dec. 31, 2017	$ 8,307	$ 25,642	$ (5,450)	$ 4,318	$ (810)	$ 32,007