Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances at Dec. 31, 2016	$ 8,698	$ 178,224	$ (8,659)	$ 178,263
Net income		3,649		3,649
Other comprehensive income (loss), net of tax			1,075	1,075
Balances at Mar. 31, 2017	8,698	181,873	(7,584)	182,987
Balances at Dec. 31, 2017	8,698	185,893	(9,695)	184,896
Net income		3,296		3,296
Other comprehensive income (loss), net of tax			(2,655)	(2,655)
Balances at Mar. 31, 2018	$ 8,698	$ 189,189	$ (12,350)	$ 185,537