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	10,731			10,731
Other comprehensive loss	(887)				(887)
Purchase of treasury stock	(2,148)					(2,148)
Stock dividend	0		5,385	(5,385)
Cash dividends declared, common stock	(1,782)			(1,782)
Balance at end of period at Jun. 30, 2021	136,503	6,769	64,692	72,499	641	(8,098)
Balance at beginning of period at Mar. 31, 2021	130,708	6,769	59,307	73,947	(1,217)	(8,098)
Increase (Decrease) in Stockholders' Equity
Net income	4,892			4,892
Other comprehensive loss	1,858				1,858
Stock dividend	0		5,385	(5,385)
Cash dividends declared, common stock	(955)			(955)
Balance at end of period at Jun. 30, 2021	136,503	6,769	64,692	72,499	641	(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	11,098			11,098
Other comprehensive loss	(31,008)				(31,008)
Purchase of treasury stock	(2,892)					(2,892)
Stock dividend	0		6,865	(6,865)
Cash dividends declared, common stock	(2,096)			(2,096)
Balance at end of period at Jun. 30, 2022	124,058	7,024	71,302	84,437	(27,715)	(10,990)
Balance at beginning of period at Mar. 31, 2022	134,387	7,024	64,437	87,919	(16,289)	(8,704)
Increase (Decrease) in Stockholders' Equity
Net income	4,489			4,489
Other comprehensive loss	(11,426)				(11,426)
Purchase of treasury stock	(2,286)					(2,286)
Stock dividend	0		6,865	(6,865)
Cash dividends declared, common stock	(1,106)			(1,106)
Balance at end of period at Jun. 30, 2022	$ 124,058	$ 7,024	$ 71,302	$ 84,437	$ (27,715)	$ (10,990)