Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock Preferred Series A Stock	Preferred Stock Preferred Series B Stock	Common Stock	Capital Surplus	Accum. Other Comprehensive Income (Loss)	Retained Earnings	Treasury Stock
Balance at Beginning of Period at Dec. 31, 2023	$ 1,414,242	$ 180,000		$ 583	$ 636,422	$ (396,688)	$ 2,107,569	$ (1,113,644)
Beginning Balance (in shares) at Dec. 31, 2023		180,000		39,753,138
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	36,391						36,391
Other Comprehensive Income	13,107					13,107
Share-Based Compensation	4,030				4,030
Common Stock Issued under Purchase and Equity Compensation Plans	1,552			$ 1	211		794	546
Common Stock Issued under Purchase and Equity Compensation Plans (in shares)				21,332
Common Stock Repurchased	(3,320)							(3,320)
Common Stock Repurchased (in shares)				(53,746)
Cash Dividends Declared Common Stock (per share)	(28,056)						(28,056)
Cash Dividends Declared Preferred Stock	(1,969)						(1,969)
Balance at End of Period at Mar. 31, 2024	1,435,977	$ 180,000		$ 584	640,663	(383,581)	2,114,729	(1,116,418)
Ending Balance (in shares) at Mar. 31, 2024		180,000		39,720,724
Balance at Beginning of Period at Dec. 31, 2024	1,667,774	$ 180,000	$ 165,000	$ 585	647,403	(343,389)	2,133,838	(1,115,663)
Beginning Balance (in shares) at Dec. 31, 2024		180,000	165,000	39,762,255
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	43,985						43,985
Other Comprehensive Income	24,992					24,992
Share-Based Compensation	3,680				3,680
Common Stock Issued under Purchase and Equity Compensation Plans	1,315			$ 1	291			1,023
Common Stock Issued under Purchase and Equity Compensation Plans (in shares)				19,477
Common Stock Repurchased	(3,314)							(3,314)
Common Stock Repurchased (in shares)				(47,428)
Cash Dividends Declared Common Stock (per share)	(28,228)						(28,228)
Cash Dividends Declared Preferred Stock	(5,269)						(5,269)
Balance at End of Period at Mar. 31, 2025	$ 1,704,935	$ 180,000	$ 165,000	$ 586	$ 651,374	$ (318,397)	$ 2,144,326	$ (1,117,954)
Ending Balance (in shares) at Mar. 31, 2025		180,000	165,000	39,734,304