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, 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
Balances at Dec. 31, 2019	133,795	102,743	3,703	240,241
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	5,368	0	5,368
Other comprehensive income	0	0	5,445	5,445
Cash dividends paid	0	(2,200)	0	(2,200)
Stock options exercised	31	0	0	31
Stock based compensation expense	40	0	0	40
Balances at Mar. 31, 2020	$ 133,866	$ 105,911	$ 9,148	$ 248,925