Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Stock in rabbi trust assumed in acquisition	Rabbi trust obligation	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2020			28,579,000
Beginning balance at Dec. 31, 2020	$ 893,421	$ (17,051)	$ 400,582	$ 478,489	$ (17,051)	$ (2,243)	$ 2,243	$ 14,350
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	95,644			95,644
Cash dividends declared	(24,208)			(24,208)
Change in Rabbi Trust Obligation	0					440	(440)
Equity issued related to acquisition (in shares)			7,070,000
Equity issued pursuant to acquisition			$ 324,389
Stock repurchases (in shares)			(107,000)
Stock repurchases			$ (4,036)
Stock withheld for payment of taxes (in shares)			(18,000)
Stock withheld for payment of taxes	(786)		$ (786)
Stock-based compensation (in shares)			105,000
Stock-based compensation	2,522		$ 2,522
Other comprehensive income (loss)	(39,320)							(39,320)
Ending balance (in shares) at Dec. 31, 2021			35,629,000
Ending balance at Dec. 31, 2021	1,230,575		$ 722,671	532,874		(1,803)	1,803	(24,970)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	146,936			146,936
Cash dividends declared	(31,392)			(31,392)
Change in Rabbi Trust Obligation	0					218	(218)
Stock withheld for payment of taxes (in shares)			(25,000)
Stock withheld for payment of taxes	(840)		$ (840)
Stock-based compensation (in shares)			100,000
Stock-based compensation	3,322		$ 3,322
Other comprehensive income (loss)	$ (317,005)							(317,005)
Ending balance (in shares) at Dec. 31, 2022	35,704,154		35,704,000
Ending balance at Dec. 31, 2022	$ 1,031,596		$ 725,153	648,418		(1,585)	1,585	(341,975)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	104,131			104,131
Cash dividends declared	(36,129)			(36,129)
Change in Rabbi Trust Obligation	0					200	(200)
Equity issued related to acquisition (in shares)			5,033,000
Equity issued pursuant to acquisition	$ 229,489		$ 229,489
Stock option exercises (in shares)	236,760		237,000
Stock option exercises	$ 4,519		$ 4,519
Stock withheld for payment of taxes (in shares)			(23,000)
Stock withheld for payment of taxes	(743)		$ (743)
Stock-based compensation (in shares)			159,000
Stock-based compensation	5,572		$ 5,572
Other comprehensive income (loss)	$ 33,945							33,945
Ending balance (in shares) at Dec. 31, 2023	41,109,987		41,110,000
Ending balance at Dec. 31, 2023	$ 1,372,380		$ 963,990	$ 716,420		$ (1,385)	$ 1,385	$ (308,030)