CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				$ 3,889
Other comprehensive income, net				55
Net income				1,481
Other comprehensive income, net				(46)
Balance at Dec. 31, 2016	$ 41,575	$ (29)	$ 23,790	$ 65,336
Balance (in shares) at Dec. 31, 2016	8,096,000			8,096,039
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	4,466	$ 4,466
Exercise of stock options	$ 347	0	0	347
Exercise of stock options (in shares)	73,000
Stock based compensation	$ 454	0	0	454
Stock based compensation (in shares)	0
Dividends on common stock	$ 0	0	(936)	(936)
Other comprehensive income, net	0	99	0	99
Balance at Sep. 30, 2017	$ 42,376	70	27,320	$ 69,766
Balance (in shares) at Sep. 30, 2017	8,169,000			8,169,439
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				$ 1,554
Other comprehensive income, net				(17)
Balance at Sep. 30, 2017	$ 42,376	$ 70	$ 27,320	$ 69,766
Balance (in shares) at Sep. 30, 2017	8,169,000			8,169,439