Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock, Common
Beginning Balance at Dec. 31, 2024	$ 3,197,325	$ 192,878	$ 614,866	$ 1,789,214	$ 1,775,620	$ (287,819)	$ (887,434)
Beginning Balance (in shares) at Dec. 31, 2024		200	182,089
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	92,987				92,987
Other comprehensive income (loss)	16,272					16,272
Common stock issued (in shares)			35
Common stock issued	624		$ 88	536
Dividend reinvestment activity (in shares)			65
Dividend reinvestment activity	1,328			424			904
Stock-based compensation awards (repurchases), net							(402)
Stock-based compensation awards (repurchases), net			$ 167
Stock-based compensation awards (in shares)			46
Stock-based compensation awards (repurchases), net	1,695			1,930
Acquisition of treasury stock (in shares)			(31)
Acquisition of treasury stock	(550)						(550)
Preferred stock dividend	(2,562)				(2,562)
Common stock cash dividends	(32,798)				(32,798)
Ending Balance at Mar. 31, 2025	3,274,321	$ 192,878	$ 615,121	1,792,104	1,833,247	(271,547)	(887,482)
Ending Balance (in shares) at Mar. 31, 2025		200	182,204
Beginning Balance at Dec. 31, 2025	3,490,447	$ 192,878	$ 617,826	1,803,235	2,024,618	(198,682)	(949,428)
Beginning Balance (in shares) at Dec. 31, 2025		200	179,895
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	94,761				94,761
Other comprehensive income (loss)	(23,205)					(23,205)
Common stock issued (in shares)			51
Common stock issued	741		$ 128	613
Dividend reinvestment activity (in shares)			68
Dividend reinvestment activity	1,361			395			966
Stock-based compensation awards (repurchases), net							(363)
Stock-based compensation awards (repurchases), net			$ 122
Stock-based compensation awards (in shares)			41
Stock-based compensation awards (repurchases), net	2,026			2,267
Acquisition of treasury stock (in shares)			(1,212)
Acquisition of treasury stock	(24,266)						(24,266)
Preferred stock dividend	(2,562)				(2,562)
Common stock cash dividends	(34,020)				(34,020)
Ending Balance at Mar. 31, 2026	$ 3,505,283	$ 192,878	$ 618,076	$ 1,806,510	$ 2,082,797	$ (221,887)	$ (973,091)
Ending Balance (in shares) at Mar. 31, 2026		200	178,843