Investment Securities, AFS and HTM Securities Gross Unrealized Losses (Details) $ in Thousands	Mar. 31, 2025 USD ($) security	Dec. 31, 2024 USD ($) security
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	51	141
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (2,070)	$ (14,323)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 648,254	$ 1,694,159
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	55	54
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (13,815)	$ (15,890)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	258,155	259,134
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(15,885)	(30,213)
Debt Securities, Available-for-sale, Unrealized Loss Position	906,409	1,953,294
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(16,161)	(13,665)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	522,436	529,064
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(555,958)	(582,241)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	2,547,298	2,519,595
Total unrealized losses on held to maturity securities	(572,119)	(595,906)
Total fair value of unrealized losses on held to maturity securities	$ 3,069,734	3,048,660
US Treasury Securities
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value		0
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(1)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value		999
Total unrealized losses on held to maturity securities		(1)
Total fair value of unrealized losses on held to maturity securities		$ 999
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
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	$ (5)	$ (3)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 540	$ 542
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	2	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (63)	$ (55)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	820	828
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(68)	(58)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,360	1,370
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(15,784)	(11,860)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	497,155	483,073
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(179,117)	(162,343)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	876,233	866,949
Total unrealized losses on held to maturity securities	(194,901)	(174,202)
Total fair value of unrealized losses on held to maturity securities	1,373,388	1,350,022
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Held-to-Maturity, 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	(59,642)	(65,963)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	268,201	266,353
Total unrealized losses on held to maturity securities	(59,642)	(65,963)
Total fair value of unrealized losses on held to maturity securities	$ 268,201	$ 266,353
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
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	12
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (911)	$ (604)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	60,939	62,830
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(911)	(604)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 60,939	$ 62,830
US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
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	4
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (17)	$ (24)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	399	464
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(17)	(24)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 399	$ 464
Other Debt securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
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	$ 0	$ (7)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,000	$ 993
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)	$ (3)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	999	997
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(1)	(11)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 1,999	$ 1,989
US Government Sponsored-Enterprise Insured Loans | Residential Mortgage-Backed Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	17	23
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (243)	$ (607)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 23,292	$ 31,983
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	14	14
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (7,231)	$ (8,927)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	61,639	61,596
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(7,474)	(9,534)
Debt Securities, Available-for-sale, Unrealized Loss Position	84,931	93,579
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(122)	(280)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	9,717	11,617
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(169,359)	(186,184)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	712,109	710,114
Total unrealized losses on held to maturity securities	(169,482)	(186,464)
Total fair value of unrealized losses on held to maturity securities	$ 721,825	$ 721,732
US Government Sponsored-Enterprise Insured Loans | Commercial Mortgage-Backed Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
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	$ (1,281)	$ (1,332)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	16,959	17,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(1,281)	(1,332)
Debt Securities, Available-for-sale, Unrealized Loss Position	16,959	17,000
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(178)	(1,343)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	8,091	25,518
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(139,030)	(157,735)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	613,936	598,077
Total unrealized losses on held to maturity securities	(139,208)	(159,078)
Total fair value of unrealized losses on held to maturity securities	$ 622,027	$ 623,595
Government National Mortgage Association (GNMA) [Member] | Residential Mortgage-Backed Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	32	116
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (1,822)	$ (13,706)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 623,422	$ 1,660,642
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	5	4
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (91)	$ (145)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	4,967	3,945
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(1,913)	(13,851)
Debt Securities, Available-for-sale, Unrealized Loss Position	628,389	1,664,587
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(77)	(183)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	7,474	8,856
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2,932)	(3,591)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	31,198	31,071
Total unrealized losses on held to maturity securities	(3,009)	(3,774)
Total fair value of unrealized losses on held to maturity securities	$ 38,671	$ 39,927
Government National Mortgage Association (GNMA) [Member] | Commercial Mortgage-Backed Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
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	16	16
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (4,221)	$ (4,800)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	111,433	111,475
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(4,221)	(4,800)
Debt Securities, Available-for-sale, Unrealized Loss Position	111,433	111,475
Debt Securities, Held-to-Maturity, 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	(5,877)	(6,424)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	45,621	46,032
Total unrealized losses on held to maturity securities	(5,877)	(6,424)
Total fair value of unrealized losses on held to maturity securities	$ 45,621	$ 46,032
Held to maturity, number of securities, less than 12 months
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	385	391
Held to maturity, number of securities, less than 12 months | US Treasury Securities
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security		0
Held to maturity, number of securities, less than 12 months | US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	369	370
Held to maturity, number of securities, less than 12 months | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	0	0
Held to maturity, number of securities, less than 12 months | US Government Sponsored-Enterprise Insured Loans | Residential Mortgage-Backed Securities [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	9	12
Held to maturity, number of securities, less than 12 months | US Government Sponsored-Enterprise Insured Loans | Commercial Mortgage-Backed Securities [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	1	2
Held to maturity, number of securities, less than 12 months | Government National Mortgage Association (GNMA) [Member] | Residential Mortgage-Backed Securities [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	6	7
Held to maturity, number of securities, less than 12 months | Government National Mortgage Association (GNMA) [Member] | Commercial Mortgage-Backed Securities [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	0	0
Held to maturity, number of securities, 12 months or more
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	924	901
Held to maturity, number of securities, 12 months or more | US Treasury Securities
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security		1
Held to maturity, number of securities, 12 months or more | US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	665	641
Held to maturity, number of securities, 12 months or more | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	18	18
Held to maturity, number of securities, 12 months or more | US Government Sponsored-Enterprise Insured Loans | Residential Mortgage-Backed Securities [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	106	106
Held to maturity, number of securities, 12 months or more | US Government Sponsored-Enterprise Insured Loans | Commercial Mortgage-Backed Securities [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	43	43
Held to maturity, number of securities, 12 months or more | Government National Mortgage Association (GNMA) [Member] | Residential Mortgage-Backed Securities [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	79	79
Held to maturity, number of securities, 12 months or more | Government National Mortgage Association (GNMA) [Member] | Commercial Mortgage-Backed Securities [Member]
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract]
Held-to-Maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	13	13