CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Shares	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning balance at Dec. 31, 2022	$ 785,328	$ 686,450	$ 265,936	$ (127,136)	$ (39,922)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	26,560		26,560
Other comprehensive income (loss), net of tax	16,157			16,157
Cash dividends declared	(10,725)		(10,725)
Reissuance of treasury stock for common share awards	0	(4,685)			4,685
Repurchase of treasury stock in connection with employee incentive program and compensation plan for Boards of Directors	(920)				(920)
Common shares issued under dividend reinvestment plan	402	402
Common shares issued under compensation plan for Boards of Directors	136	8			128
Common shares issued under employee stock purchase plan	455	42			413
Stock-based compensation	2,150	2,150
Ending balance at Mar. 31, 2023	819,543	684,367	281,771	(110,979)	(35,616)
Beginning balance at Dec. 31, 2023	1,053,534	865,227	327,237	(101,590)	(37,340)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	29,584		29,584
Other comprehensive income (loss), net of tax	(7,350)			(7,350)
Cash dividends declared	(13,745)		(13,745)
Reissuance of treasury stock for common share awards	0	(6,862)			6,862
Repurchase of treasury stock in connection with employee incentive program and compensation plan for Boards of Directors	(869)				(869)
Common shares repurchased under share repurchase program	(3,000)				(3,000)
Common shares issued under dividend reinvestment plan	455	455
Common shares issued under compensation plan for Boards of Directors	138	21			117
Common shares issued under employee stock purchase plan	231	60			171
Stock-based compensation	3,024	3,024
Ending balance at Mar. 31, 2024	$ 1,062,002	$ 861,925	$ 343,076	$ (108,940)	$ (34,059)