Investment Securities, AFS and HTM Securities Gross Unrealized Losses (Details) $ in Thousands	Dec. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	141	82
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (14,323)	$ (4,773)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,694,159	$ 307,527
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	54	213
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (15,890)	$ (168,728)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	259,134	1,392,635
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(30,213)	(173,501)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,953,294	1,700,162
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(13,665)	(2,184)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	529,064	220,865
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(582,241)	(533,046)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	2,519,595	2,566,468
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss	(595,906)	(535,230)
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value	3,048,660	$ 2,787,333
US Treasury Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security		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, Less than 12 Months		$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security		1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		$ (4,083)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		35,902
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		(4,083)
Debt Securities, Available-for-sale, Unrealized Loss Position		35,902
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	0
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1)	(36)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	999	963
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss	(1)	(36)
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value	$ 999	$ 963
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	1	41
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (3)	$ (347)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 542	$ 23,762
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	2	92
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (55)	$ (1,867)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	828	53,022
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(58)	(2,214)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,370	76,784
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(11,860)	(1,535)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	483,073	180,270
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(162,343)	(132,518)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	866,949	792,940
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss	(174,202)	(134,053)
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value	1,350,022	973,210
Mortgage-Backed Securities, Issued by Private Enterprises [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	0
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(65,963)	(65,372)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	266,353	289,507
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss	(65,963)	(65,372)
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value	$ 266,353	$ 289,507
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	12	14
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (604)	$ (1,862)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	62,830	125,339
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(604)	(1,862)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 62,830	$ 125,339
US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	4	5
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (24)	$ (28)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	464	761
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(24)	(28)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 464	$ 761
Other Debt Obligations [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	1	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (7)	$ (9)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 993	$ 991
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	1	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (3)	$ (42)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	997	1,958
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(11)	(50)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 1,989	$ 2,950
US Government Sponsored-Enterprise Insured Loans [Member] | Residential Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	23	18
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (607)	$ (333)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 31,983	$ 22,870
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	14	71
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (8,927)	$ (153,219)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	61,596	1,080,337
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(9,534)	(153,552)
Debt Securities, Available-for-sale, Unrealized Loss Position	93,579	1,103,207
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(280)	(511)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	11,617	30,323
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(186,184)	(164,076)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	710,114	771,042
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss	(186,464)	(164,587)
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value	$ 721,732	$ 801,365
US Government Sponsored-Enterprise Insured Loans [Member] | Commercial Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	1	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (1,332)	$ (1,755)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	17,000	16,937
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(1,332)	(1,755)
Debt Securities, Available-for-sale, Unrealized Loss Position	17,000	16,937
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,343)	(121)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	25,518	8,144
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(157,735)	(160,660)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	598,077	624,770
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss	(159,078)	(160,781)
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value	$ 623,595	$ 632,914
Government National Mortgage Association (GNMA) [Member] | Residential Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	116	13
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (13,706)	$ (924)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,660,642	$ 156,847
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	4	5
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (145)	$ (1,898)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	3,945	26,643
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(13,851)	(2,822)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,664,587	183,490
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(183)	(17)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	8,856	2,128
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(3,591)	(2,884)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	31,071	34,626
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss	(3,774)	(2,901)
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value	$ 39,927	$ 36,754
Government National Mortgage Association (GNMA) [Member] | Commercial Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	0	9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ (3,160)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 103,055
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	16	22
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (4,800)	$ (3,975)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	111,475	51,738
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(4,800)	(7,135)
Debt Securities, Available-for-sale, Unrealized Loss Position	111,475	154,793
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	0
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(6,424)	(7,500)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	46,032	52,619
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss	(6,424)	(7,500)
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value	$ 46,032	$ 52,619
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	391	205
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year [Member] | US Treasury Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	0	0
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year [Member] | US States and Political Subdivisions Debt Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	370	182
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	0	0
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Residential Mortgage-Backed Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	12	20
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Commercial Mortgage-Backed Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	2	1
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year [Member] | Government National Mortgage Association (GNMA) [Member] | Residential Mortgage-Backed Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	7	2
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year [Member] | Government National Mortgage Association (GNMA) [Member] | Commercial Mortgage-Backed Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	0	0
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	901	785
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year [Member] | US Treasury Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	1	1
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year [Member] | US States and Political Subdivisions Debt Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	641	537
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	18	18
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Residential Mortgage-Backed Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	106	94
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year [Member] | US Government Sponsored-Enterprise Insured Loans [Member] | Commercial Mortgage-Backed Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	43	44
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year [Member] | Government National Mortgage Association (GNMA) [Member] | Residential Mortgage-Backed Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	79	78
Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year [Member] | Government National Mortgage Association (GNMA) [Member] | Commercial Mortgage-Backed Securities [Member]
Held-to-maturity Securities Continuous Unrealized Loss Position [Abstract]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	13	13