Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2021		55,756,233
Beginning balance at Dec. 31, 2021	$ 2,209,853	$ 296,483	$ (118,027)	$ 1,300,192	$ 741,648	$ (10,443)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	33,547				33,547
Other comprehensive income (loss)	(94,126)					(94,126)
Comprehensive (loss) income	(60,579)
Cash dividends	(12,505)				(12,505)
Issuance of common stock for stock-based compensation awards (in shares)		124,433
Issuance of common stock for stock-based compensation awards	(2,465)		3,977	(6,442)
Stock-based compensation expense	3,338			3,338
Ending balance (in shares) at Mar. 31, 2022		55,880,666
Ending balance at Mar. 31, 2022	$ 2,137,642	$ 296,483	(114,050)	1,297,088	762,690	(104,569)
Beginning balance (in shares) at Dec. 31, 2022	55,953,104	55,953,104
Beginning balance at Dec. 31, 2022	$ 2,136,016	$ 296,483	(111,577)	1,302,422	857,725	(209,037)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	46,078				46,078
Other comprehensive income (loss)	16,713					16,713
Comprehensive (loss) income	62,791
Cash dividends	(12,561)				(12,561)
Issuance of common stock for stock-based compensation awards (in shares)		120,554
Issuance of common stock for stock-based compensation awards	(2,391)		4,018	(6,409)
Stock-based compensation expense	$ 3,445			3,445
Ending balance (in shares) at Mar. 31, 2023	56,073,658	56,073,658
Ending balance at Mar. 31, 2023	$ 2,187,300	$ 296,483	$ (107,559)	$ 1,299,458	$ 891,242	$ (192,324)