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Derivative Financial Instruments Notional Amounts and Fair Values of Derivative Financial Instruments (Details) $ in Thousands	Dec. 31, 2024 USD ($) Security	Dec. 31, 2023 USD ($) Security
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 159,250	$ 157,612
Derivative Liability, Fair Value, Gross Liability	(254,332)	(245,584)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	1,143,727	146,416
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(15,221)	(3,240)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,776,769	2,145,336
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(299,284)	(298,236)
Debt Securities, Available-for-sale, Unrealized Loss Position	2,920,496	2,291,752
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(314,505)	(301,476)
Estimated Fair Value, Less Than 12 Months	155,726	0
Unrealized Losses, Less Than 12 Months	$ (1,754)	$ 0
Debt securities, held-to-maturity, number of positions | Security	180	180
Estimated Fair Value, 12 Months or Longer	$ 1,008,973	$ 1,072,207
Unrealized Losses, 12 Months or Longer	(210,368)	(195,715)
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	1,164,699	1,072,207
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (212,122)	$ (195,715)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	78	56
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	7	0
Debt securities, available for sale, number of positions | Security	600	671
U.S. Government securities
Derivatives, Fair Value [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months		$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		42,161
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		(314)
Debt Securities, Available-for-sale, Unrealized Loss Position		42,161
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		$ (314)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security		0
Debt securities, available for sale, number of positions | Security		1
Residential mortgage-backed securities
Derivatives, Fair Value [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 777,695	$ 409
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(9,178)	(3)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	174,284	195,453
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(30,823)	(26,482)
Debt Securities, Available-for-sale, Unrealized Loss Position	951,979	195,862
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(40,001)	(26,485)
Estimated Fair Value, Less Than 12 Months	155,726	0
Unrealized Losses, Less Than 12 Months	$ (1,754)	0
Debt securities, held-to-maturity, number of positions | Security	120
Estimated Fair Value, 12 Months or Longer	$ 303,220	355,270
Unrealized Losses, 12 Months or Longer	(58,408)	(51,805)
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	458,946	355,270
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (60,162)	$ (51,805)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	42	6
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	7	0
Debt securities, available for sale, number of positions | Security	69	69
Commercial mortgage-backed securities
Derivatives, Fair Value [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 19,291	$ 26,907
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(875)	(1,053)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	497,591	507,481
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(99,848)	(91,923)
Debt Securities, Available-for-sale, Unrealized Loss Position	516,882	534,388
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(100,723)	(92,976)
Estimated Fair Value, Less Than 12 Months	0	0
Unrealized Losses, Less Than 12 Months	$ 0	$ 0
Debt securities, held-to-maturity, number of positions | Security	60	120
Estimated Fair Value, 12 Months or Longer	$ 705,753	$ 716,937
Unrealized Losses, 12 Months or Longer	(151,960)	(143,910)
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	705,753	716,937
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (151,960)	$ (143,910)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	1	2
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	0	0
Debt securities, available for sale, number of positions | Security	135	133
US Government Agencies Debt Securities
Derivatives, Fair Value [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months		$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		1,010
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		(28)
Debt Securities, Available-for-sale, Unrealized Loss Position		1,010
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		$ (28)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security		0
Debt securities, available for sale, number of positions | Security		1
State and municipal securities
Derivatives, Fair Value [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 53,026	$ 76,155
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,692)	(858)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	755,310	917,274
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(143,754)	(128,789)
Debt Securities, Available-for-sale, Unrealized Loss Position	808,336	993,429
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (145,446)	$ (129,647)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	22	40
Debt securities, available for sale, number of positions | Security	272	314
Corporate debt securities
Derivatives, Fair Value [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 4,844	$ 42,945
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(13)	(1,326)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	264,099	370,523
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(14,421)	(39,310)
Debt Securities, Available-for-sale, Unrealized Loss Position	268,943	413,468
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (14,434)	$ (40,636)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	1	8
Debt securities, available for sale, number of positions | Security	47	60
Collateralized mortgage obligations
Derivatives, Fair Value [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 288,871	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(3,463)	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	85,485	111,434
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	(10,438)	(11,390)
Debt Securities, Available-for-sale, Unrealized Loss Position	374,356	111,434
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (13,901)	$ (11,390)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security	12	0
Debt securities, available for sale, number of positions | Security	77	93
Interest Rate Locks with Customers
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	$ 171,933	$ 119,558
Derivative Liability, Notional Amount	3,888	1,015
Derivative Asset, Fair Value, Gross Asset	389	460
Interest Rate Locks with Customers | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(58)	(2)
Forward Commitments
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	51,250	0
Derivative Liability, Notional Amount	0	42,000
Derivative Asset, Fair Value, Gross Asset	363	0
Forward Commitments | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	0	(854)
Interest Rate Swap With Customer [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	767,905	824,659
Derivative Liability, Notional Amount	3,976,294	3,784,236
Derivative Asset, Fair Value, Gross Asset	8,480	22,656
Interest Rate Swap With Customer [Member] | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(239,058)	(222,530)
Interest Rate Swap With Counterparty [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	3,976,294	3,784,236
Derivative Liability, Notional Amount	767,905	824,659
Derivative Asset, Fair Value, Gross Asset	150,480	128,235
Interest Rate Swap With Counterparty [Member] | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(10,734)	(23,023)
Interest Rate Swaps Used in Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	2,500,000	2,500,000
Derivative Liability, Notional Amount	1,400,000	750,000
Derivative Asset, Fair Value, Gross Asset	227	6,189
Interest Rate Swaps Used in Cash Flow Hedges [Member] | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(2,971)	0
Foreign Exchange Contracts with Customers
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	28,327	4,159
Derivative Liability, Notional Amount	693	13,353
Derivative Asset, Fair Value, Gross Asset	1,619	40
Foreign Exchange Contracts with Customers | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(27)	(446)
Foreign Exchange Contracts with Correspondent Banks
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	4,059	15,969
Derivative Liability, Notional Amount	32,406	6,112
Derivative Asset, Fair Value, Gross Asset	63	532
Foreign Exchange Contracts with Correspondent Banks | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ (1,569)	$ (31)

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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