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, 2022	$ 2,579,757	$ 192,878	$ 561,511	$ 1,541,840	$ 1,450,758	$ (385,476)	$ (781,754)
Beginning Balance (in shares) at Dec. 31, 2022		200	167,599
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	147,920				147,920
Other comprehensive income (loss)	6,190					6,190
Common stock issued (in shares)			135
Common stock issued	1,830		$ 338	1,472			20
Dividend reinvestment activity (in shares)			189
Dividend reinvestment activity	2,802			172			2,630
Stock-based compensation awards (repurchases)							(3,893)
Stock-based compensation awards (repurchases)			$ 2,288
Stock-based compensation awards (in shares)			586
Stock-based compensation awards (repurchases)	617			2,222
Acquisition of treasury stock (in shares)			(2,412)
Acquisition of treasury stock	(40,449)						(40,449)
Preferred stock dividend	(5,124)				(5,124)
Common stock cash dividends	(51,391)				(51,391)
Ending Balance at Jun. 30, 2023	2,642,152	$ 192,878	$ 564,137	1,545,706	1,542,163	(379,286)	(823,446)
Ending Balance (in shares) at Jun. 30, 2023		200	166,097
Beginning Balance at Mar. 31, 2023	2,618,998	$ 192,878	$ 561,853	1,544,758	1,491,701	(350,992)	(821,200)
Beginning Balance (in shares) at Mar. 31, 2023		200	165,396
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	79,607				79,607
Other comprehensive income (loss)	(28,294)					(28,294)
Common stock issued (in shares)			46
Common stock issued	595		$ 115	474			6
Dividend reinvestment activity (in shares)			108
Dividend reinvestment activity	1,433			(68)			1,501
Stock-based compensation awards (repurchases)							(3,753)
Stock-based compensation awards (repurchases)			$ 2,169
Stock-based compensation awards (in shares)			547
Stock-based compensation awards (repurchases)	(1,042)			542
Preferred stock dividend	(2,562)				(2,562)
Common stock cash dividends	(26,583)				(26,583)
Ending Balance at Jun. 30, 2023	2,642,152	$ 192,878	$ 564,137	1,545,706	1,542,163	(379,286)	(823,446)
Ending Balance (in shares) at Jun. 30, 2023		200	166,097
Beginning Balance at Dec. 31, 2023	2,760,139	$ 192,878	$ 564,402	1,552,860	1,619,300	(312,280)	(857,021)
Beginning Balance (in shares) at Dec. 31, 2023		200	163,801
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	156,916				156,916
Other comprehensive income (loss)	1,746					1,746
Common stock issued (in shares)			19,279
Common stock issued	274,310		$ 48,198	226,100			12
Dividend reinvestment activity (in shares)			178
Dividend reinvestment activity	2,750			274			2,476
Stock-based compensation awards (repurchases)							(4,113)
Stock-based compensation awards (repurchases)			$ 1,923
Stock-based compensation awards (in shares)			507
Stock-based compensation awards (repurchases)	(334)			1,856
Acquisition of treasury stock (in shares)			(1,934)
Acquisition of treasury stock	(30,348)						(30,348)
Preferred stock dividend	(5,124)				(5,124)
Common stock cash dividends	(58,446)				(58,446)
Ending Balance at Jun. 30, 2024	3,101,609	$ 192,878	$ 614,523	1,781,090	1,712,646	(310,534)	(888,994)
Ending Balance (in shares) at Jun. 30, 2024		200	181,831
Beginning Balance at Mar. 31, 2024	2,757,679	$ 192,878	$ 564,751	1,554,624	1,651,133	(319,468)	(886,239)
Beginning Balance (in shares) at Mar. 31, 2024		200	162,087
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	94,975				94,975
Other comprehensive income (loss)	8,934					8,934
Common stock issued (in shares)			19,200
Common stock issued	273,205		$ 48,000	225,205
Dividend reinvestment activity (in shares)			91
Dividend reinvestment activity	1,345			90			1,255
Stock-based compensation awards (repurchases)							(4,010)
Stock-based compensation awards (repurchases)			$ 1,772
Stock-based compensation awards (in shares)			453
Stock-based compensation awards (repurchases)	(1,067)			1,171
Preferred stock dividend	(2,562)				(2,562)
Common stock cash dividends	(30,900)				(30,900)
Ending Balance at Jun. 30, 2024	$ 3,101,609	$ 192,878	$ 614,523	$ 1,781,090	$ 1,712,646	$ (310,534)	$ (888,994)
Ending Balance (in shares) at Jun. 30, 2024		200	181,831