CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balances at Dec. 31, 2017	$ 110,445	$ 74,983	$ (2,073)	$ 183,355
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	5,133	0	5,133
Other comprehensive income	0	0	(3,051)	(3,051)
Cash dividends paid	0	(1,601)	0	(1,601)
Stock options exercised	13	0	0	13
Stock based compensation expense	27	0	0	27
Balances at Mar. 31, 2018	110,485	78,515	(5,124)	183,876
Balances at Dec. 31, 2018	133,248	87,333	(3,852)	216,729
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	6,176	0	6,176
Other comprehensive income	0	0	4,427	4,427
Cash dividends paid	0	(2,195)	0	(2,195)
Stock options exercised	51	0	0	51
Stock based compensation expense	39	0	0	39
Balances at Mar. 31, 2019	$ 133,338	$ 91,314	$ 575	$ 225,227