Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balance at beginning of period at Dec. 31, 2020	$ 130,589	$ 6,769	$ 59,307	$ 68,935	$ 1,528	$ (5,950)
Increase (Decrease) in Stockholders' Equity
Net income	5,839			5,839
Other comprehensive loss	(2,745)				(2,745)
Purchase of treasury stock	(2,148)					(2,148)
Cash dividends declared, common stock	(827)			(827)
Balance at end of period at Mar. 31, 2021	130,708	6,769	59,307	73,947	(1,217)	(8,098)
Balance at beginning of period at Dec. 31, 2021	148,956	7,024	64,437	82,300	3,293	(8,098)
Increase (Decrease) in Stockholders' Equity
Net income	6,609			6,609
Other comprehensive loss	(19,582)				(19,582)
Purchase of treasury stock	(606)					(606)
Cash dividends declared, common stock	(990)			(990)
Balance at end of period at Mar. 31, 2022	$ 134,387	$ 7,024	$ 64,437	$ 87,919	$ (16,289)	$ (8,704)