Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2022		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 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
Ending balance at Mar. 31, 2023	2,187,300	$ 296,483	(107,559)	1,299,458	891,242	(192,324)
Beginning balance (in shares) at Dec. 31, 2022		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	74,721
Other comprehensive income (loss)	17,576
Comprehensive income	92,297
Ending balance (in shares) at Jun. 30, 2023		56,132,478
Ending balance at Jun. 30, 2023	2,208,628	$ 296,483	(105,589)	1,301,883	907,312	(191,461)
Beginning balance (in shares) at Mar. 31, 2023		56,073,658
Beginning balance at Mar. 31, 2023	2,187,300	$ 296,483	(107,559)	1,299,458	891,242	(192,324)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	28,643				28,643
Other comprehensive income (loss)	863					863
Comprehensive income	29,506
Cash dividends	(12,573)				(12,573)
Issuance of common stock for stock-based compensation awards (in shares)		58,820
Issuance of common stock for stock-based compensation awards	1,000		1,970	(970)
Stock-based compensation expense	3,395			3,395
Ending balance (in shares) at Jun. 30, 2023		56,132,478
Ending balance at Jun. 30, 2023	$ 2,208,628	$ 296,483	(105,589)	1,301,883	907,312	(191,461)
Beginning balance (in shares) at Dec. 31, 2023	56,142,207	56,142,207
Beginning balance at Dec. 31, 2023	$ 2,297,383	$ 296,483	(105,249)	1,308,281	952,124	(154,256)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	39,409				39,409
Other comprehensive income (loss)	(2,687)					(2,687)
Comprehensive income	36,722
Cash dividends	(12,653)				(12,653)
Issuance of common stock for stock-based compensation awards (in shares)		162,653
Issuance of common stock for stock-based compensation awards	(3,094)		5,566	(8,660)
Stock-based compensation expense	3,992			3,992
Ending balance (in shares) at Mar. 31, 2024		56,304,860
Ending balance at Mar. 31, 2024	$ 2,322,350	$ 296,483	(99,683)	1,303,613	978,880	(156,943)
Beginning balance (in shares) at Dec. 31, 2023	56,142,207	56,142,207
Beginning balance at Dec. 31, 2023	$ 2,297,383	$ 296,483	(105,249)	1,308,281	952,124	(154,256)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	78,255
Other comprehensive income (loss)	140
Comprehensive income	$ 78,395
Ending balance (in shares) at Jun. 30, 2024	56,367,924	56,367,924
Ending balance at Jun. 30, 2024	$ 2,354,701	$ 296,483	(97,534)	1,304,782	1,005,086	(154,116)
Beginning balance (in shares) at Mar. 31, 2024		56,304,860
Beginning balance at Mar. 31, 2024	2,322,350	$ 296,483	(99,683)	1,303,613	978,880	(156,943)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	38,846				38,846
Other comprehensive income (loss)	2,827					2,827
Comprehensive income	41,673
Cash dividends	(12,640)				(12,640)
Issuance of common stock for stock-based compensation awards (in shares)		63,064
Issuance of common stock for stock-based compensation awards	(56)		2,149	(2,205)
Stock-based compensation expense	$ 3,374			3,374
Ending balance (in shares) at Jun. 30, 2024	56,367,924	56,367,924
Ending balance at Jun. 30, 2024	$ 2,354,701	$ 296,483	$ (97,534)	$ 1,304,782	$ 1,005,086	$ (154,116)