CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
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
Balances at Dec. 31, 2020	134,110	116,378	9,419	259,907
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	6,550	0	6,550
Other comprehensive income	0	0	(4,079)	(4,079)
Cash dividends paid	0	(16,911)	0	(16,911)
Stock options exercised	191	0	0	191
Stock based compensation expense	21	0	0	21
Balances at Mar. 31, 2021	$ 134,322	$ 106,017	$ 5,340	$ 245,679