Condensed Consolidated Statements of Stockholders Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income [Member]	Retained Earnings (Deficit)	Total
Beginning Balance, shares at Dec. 31, 2013	13,588,804
Beginning Balance, amount at Dec. 31, 2013	$ 8,153	$ 24,672	$ 0	$ (1,405)	$ 31,420
Common stock options exercised and issued, shares	76,283
Common stock options exercised and issued, amount	$ 46	98			144
Share-based compensation expense		46			46
Net income				1,623	1,623
Ending Balance, shares at Dec. 31, 2014	13,665,087
Ending Balance, amount at Dec. 31, 2014	$ 8,199	24,816	0	218	33,233
Common stock options exercised and issued, shares	65,475
Common stock options exercised and issued, amount	$ 39	53			92
Share-based compensation expense		57			57
Net income				1,041	1,041
Unrealized gain on available-for-sale securities			397		397
Ending Balance, shares at Dec. 31, 2015	13,730,562
Ending Balance, amount at Dec. 31, 2015	$ 8,238	$ 24,926	$ 397	$ 1,259	$ 34,820