Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interest and Dividend Income, Operating [Abstract]
Interest and Fee Income, Loans and Leases		$ 1,830,241	$ 1,720,406	$ 992,642
Interest and Dividend Income, Securities, by Taxable Status [Abstract]
Interest Income, Securities, Operating, Taxable		198,579	146,006	75,444
Interest Income, Securities, Operating, Tax Exempt		58,572	63,233	65,691
Other Interest and Dividend Income		35,312	28,408	11,475
Interest and Dividend Income, Operating, Total		2,122,704	1,958,052	1,145,252
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Deposits		901,804	673,624	98,309
Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase		11,754	12,238	3,480
Interest Expense, Other Short-Term Borrowings		17,597	1	2
Interest on FHLB Funding		98,520	196,535	75,487
Interest Expense, Long-Term Debt		45,781	36,080	10,653
Interest Expense, Operating and Nonoperating, Total		1,075,456	918,479	187,931
Interest Income (Expense), Operating, Total		1,047,248	1,039,573	957,321
Provision for Loan, Lease, and Other Losses		84,986	83,021	32,998
Interest Income (Expense), after Provision for Loan Loss, Total		962,263	956,552	924,323
Noninterest Income [Abstract]
Capital Market Fees Net		22,084	24,649	29,917
Fees and Commissions, Mortgage Banking and Servicing		10,686	19,429	18,873
Gain (Loss) on Sale of Mortgage Loans		(130,406)	(136,239)	0
Bank Owned Life Insurance Income		13,477	10,266	11,431
Gain (Loss) on Disposition of Assets	[1]	(1,042)	454	1,338
Debt Securities, Available-for-Sale, Realized Gain (Loss), Excluding Other-than-temporary Impairment		(144,147)	(58,903)	3,746
Noninterest Income, Other Operating Income		9,310	9,691	10,715
Noninterest Income, Total		(9,407)	63,182	282,370
Noninterest Expense [Abstract]
Labor and Related Expense		487,956	468,355	454,101
Information Technology and Data Processing		107,563	102,018	90,700
Occupancy, Net		54,622	57,204	59,794
Marketing and Advertising Expense		28,142	28,405	25,525
Equipment Expense		18,431	19,663	19,632
Professional Fees		21,601	19,911	18,250
Payments of Financing Costs		8,471	5,408	5,925
Federal Deposit Insurance Corporation Premium Expense		38,439	67,072	22,650
Amortization of Intangible Assets		8,811	8,811	8,811
Prepayment Fees on Advances, Net		14,243	0	0
Other Noninterest Expense		30,118	36,837	41,675
Noninterest Expense, Total		818,397	813,682	747,063
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest		134,459	206,052	459,630
Income Tax Expense (Benefit)		11,314	23,097	93,508
Net Income (Loss) Attributable to Parent, Total		123,145	182,956	366,122
Preferred Stock Dividends and Other Adjustments		11,500	11,500	11,500
Net Income (Loss) Available to Common Stockholders, Basic, Total		$ 111,645	$ 171,456	$ 354,622
Earnings Per Share [Abstract]
Earnings Per Share, Basic		$ 0.73	$ 1.14	$ 2.36
Earnings Per Share, Diluted		$ 0.72	$ 1.13	$ 2.34
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted Average Number of Shares Outstanding, Basic		151,933	149,968	149,162
Weighted Average Number of Shares Outstanding, Diluted		153,347	150,860	150,496
Fiduciary and Trust [Member]
Noninterest Income [Abstract]
Noninterest Income In Scope of Topic 606		$ 92,569	$ 82,502	$ 84,122
Deposit Account [Member]
Noninterest Income [Abstract]
Noninterest Income In Scope of Topic 606		51,642	49,045	62,310
Credit and Debit Card [Member]
Noninterest Income [Abstract]
Revenue from Contract with Customer, Including Assessed Tax		46,921	45,020	44,014
Financial Service, Other [Member]
Noninterest Income [Abstract]
Revenue from Contract with Customer, Including Assessed Tax		$ 19,499	$ 17,268	$ 15,903

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