CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balances at Dec. 31, 2016	$ 127	$ 64,201	$ 90,964	$ (993)	$ 154,299
Net income			2,800		2,800
Other comprehensive income				742	742
Stock-based compensation		418			418
Cash dividends declared			(633)		(633)
Balances at Mar. 31, 2017	127	64,619	93,131	(251)	157,626
Balances at Dec. 31, 2017	127	65,256	99,662	(1,309)	163,736
Net income			4,058		4,058
Other comprehensive income				(2,069)	(2,069)
Stock-based compensation		143			143
Cash dividends declared			(891)		(891)
Balances at Mar. 31, 2018	$ 127	$ 65,399	$ 102,829	$ (3,378)	$ 164,977