CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance (in shares) at Dec. 31, 2020		21,598,993
Beginning balance at Dec. 31, 2020	$ 644,815	$ 21,599	$ 456,919	$ 154,241	$ 25,816	$ (13,760)
Treasury stock, beginning balance (in shares) at Dec. 31, 2020						(483,984)
Net income	16,644			16,644
Common stock repurchased (in shares)						(165,623)
Common stock repurchased	(5,171)					$ (5,171)
Other comprehensive income (loss)	(9,615)				(9,615)
Dividends on common stock	(2,723)			(2,723)
Issuance of restricted stock grants (in shares)		84,578
Issuance of restricted stock grants		$ 85	(85)
Restricted stock grants forfeited (in shares)		(500)
Restricted stock grants forfeited		$ (1)	1
Repurchase of restricted stock for payment of taxes (in shares)		(14,720)
Repurchase of restricted stock for payment of taxes	(441)	$ (15)	(426)
Compensation expense	440		440
Ending balance at Mar. 31, 2021	643,949	$ 21,668	456,849	168,162	16,201	$ (18,931)
Ending balance (in shares) at Mar. 31, 2021		21,668,351
Treasury stock, ending balance (in shares) at Mar. 31, 2021						(649,607)
Beginning balance (in shares) at Dec. 31, 2020		21,598,993
Beginning balance at Dec. 31, 2020	644,815	$ 21,599	456,919	154,241	25,816	$ (13,760)
Treasury stock, beginning balance (in shares) at Dec. 31, 2020						(483,984)
Net income	32,244
Ending balance at Jun. 30, 2021	660,052	$ 21,670	457,396	180,820	19,097	$ (18,931)
Ending balance (in shares) at Jun. 30, 2021		21,670,330
Treasury stock, ending balance (in shares) at Jun. 30, 2021						(649,607)
Beginning balance (in shares) at Mar. 31, 2021		21,668,351
Beginning balance at Mar. 31, 2021	643,949	$ 21,668	456,849	168,162	16,201	$ (18,931)
Treasury stock, beginning balance (in shares) at Mar. 31, 2021						(649,607)
Net income	15,600			15,600
Other comprehensive income (loss)	2,896				2,896
Dividends on common stock	(2,942)			(2,942)
Issuance of restricted stock grants (in shares)		3,000
Issuance of restricted stock grants		$ 3	(3)
Restricted stock grants forfeited (in shares)		(1,021)
Restricted stock grants forfeited		$ (1)	1
Compensation expense	549		549
Ending balance at Jun. 30, 2021	660,052	$ 21,670	457,396	180,820	19,097	$ (18,931)
Ending balance (in shares) at Jun. 30, 2021		21,670,330
Treasury stock, ending balance (in shares) at Jun. 30, 2021						(649,607)
Beginning balance (in shares) at Dec. 31, 2021		21,668,644
Beginning balance at Dec. 31, 2021	676,172	$ 21,669	459,228	206,228	7,978	$ (18,931)
Treasury stock, beginning balance (in shares) at Dec. 31, 2021						(649,607)
Net income	16,829			16,829
Common stock repurchased (in shares)						(600,000)
Common stock repurchased	(22,180)					$ (22,180)
Other comprehensive income (loss)	(76,825)				(76,825)
Dividends on common stock	(3,468)			(3,468)
Issuance of restricted stock grants (in shares)		82,123
Issuance of restricted stock grants		$ 82	(82)
Restricted stock grants forfeited (in shares)		(1,000)
Restricted stock grants forfeited		$ (1)	1
Repurchase of restricted stock for payment of taxes (in shares)		(15,330)
Repurchase of restricted stock for payment of taxes	(554)	$ (16)	(538)
Compensation expense	466		466
Ending balance at Mar. 31, 2022	590,440	$ 21,734	459,075	219,589	(68,847)	$ (41,111)
Ending balance (in shares) at Mar. 31, 2022		21,734,437
Treasury stock, ending balance (in shares) at Mar. 31, 2022						(1,249,607)
Beginning balance (in shares) at Dec. 31, 2021		21,668,644
Beginning balance at Dec. 31, 2021	676,172	$ 21,669	459,228	206,228	7,978	$ (18,931)
Treasury stock, beginning balance (in shares) at Dec. 31, 2021						(649,607)
Net income	32,582
Ending balance at Jun. 30, 2022	560,452	$ 21,779	459,503	231,654	(111,373)	$ (41,111)
Ending balance (in shares) at Jun. 30, 2022		21,778,731
Treasury stock, ending balance (in shares) at Jun. 30, 2022						(1,249,607)
Beginning balance (in shares) at Mar. 31, 2022		21,734,437
Beginning balance at Mar. 31, 2022	590,440	$ 21,734	459,075	219,589	(68,847)	$ (41,111)
Treasury stock, beginning balance (in shares) at Mar. 31, 2022						(1,249,607)
Net income	15,753			15,753
Other comprehensive income (loss)	(42,526)				(42,526)
Dividends on common stock	(3,688)			(3,688)
Issuance of restricted stock grants (in shares)		47,827
Issuance of restricted stock grants		$ 48	(48)
Restricted stock grants forfeited (in shares)		(1,000)
Restricted stock grants forfeited		$ (1)	1
Repurchase of restricted stock for payment of taxes (in shares)		(2,533)
Repurchase of restricted stock for payment of taxes	(73)	$ (2)	(71)
Compensation expense	546		546
Ending balance at Jun. 30, 2022	$ 560,452	$ 21,779	$ 459,503	$ 231,654	$ (111,373)	$ (41,111)
Ending balance (in shares) at Jun. 30, 2022		21,778,731
Treasury stock, ending balance (in shares) at Jun. 30, 2022						(1,249,607)