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Investment Securities, AFS and HTM Securities Gross Unrealized Losses (Details) $ in Thousands | Jun. 30, 2025 USD ($) security | Dec. 31, 2024 USD ($) security
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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 | 35 | 141
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | $ (688) | $ (14,323)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 128,798 | $ 1,694,159
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security | 54 | 54
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | $ (13,682) | $ (15,890)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 252,471 | 259,134
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (14,370) | (30,213)
Debt Securities, Available-for-sale, Unrealized Loss Position | 381,269 | 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 | (17,397) | (13,665)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 528,754 | 529,064
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (552,590) | (582,241)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 2,514,312 | 2,519,595
Total unrealized losses on held to maturity securities | (569,986) | (595,906)
Total fair value of unrealized losses on held to maturity securities | $ 3,043,067 | 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 | $ 0 | $ (3)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 545 | $ 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 | $ (71) | $ (55)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 812 | 828
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (71) | (58)
Debt Securities, Available-for-sale, Unrealized Loss Position | 1,357 | 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 | (16,718) | (11,860)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 486,300 | 483,073
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (184,912) | (162,343)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 863,436 | 866,949
Total unrealized losses on held to maturity securities | (201,630) | (174,202)
Total fair value of unrealized losses on held to maturity securities | 1,349,736 | 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 | (58,290) | (65,963)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 262,536 | 266,353
Total unrealized losses on held to maturity securities | (58,290) | (65,963)
Total fair value of unrealized losses on held to maturity securities | $ 262,536 | $ 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 | 3 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | $ (389) | $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 41,906 | $ 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 | $ (1,300) | $ (604)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 58,583 | 62,830
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (1,689) | (604)
Debt Securities, Available-for-sale, Unrealized Loss Position | $ 100,489 | $ 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 | 369 | 464
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (17) | (24)
Debt Securities, Available-for-sale, Unrealized Loss Position | $ 369 | $ 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 | $ (2) | $ (7)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 998 | $ 993
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security | 0 | 1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | $ 0 | $ (3)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 0 | 997
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (2) | (11)
Debt Securities, Available-for-sale, Unrealized Loss Position | $ 998 | $ 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 | 19 | 23
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | $ (216) | $ (607)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 25,111 | $ 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 | $ (6,509) | $ (8,927)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 60,428 | 61,596
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (6,725) | (9,534)
Debt Securities, Available-for-sale, Unrealized Loss Position | 85,538 | 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 | (110) | (280)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 8,687 | 11,617
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (168,271) | (186,184)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 695,891 | 710,114
Total unrealized losses on held to maturity securities | (168,381) | (186,464)
Total fair value of unrealized losses on held to maturity securities | $ 704,578 | $ 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 | $ (1,210) | $ (1,332)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 16,937 | 17,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (1,210) | (1,332)
Debt Securities, Available-for-sale, Unrealized Loss Position | 16,937 | 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 | (481) | (1,343)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 26,335 | 25,518
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (132,664) | (157,735)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 618,087 | 598,077
Total unrealized losses on held to maturity securities | (133,145) | (159,078)
Total fair value of unrealized losses on held to maturity securities | $ 644,422 | $ 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 | 11 | 116
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | $ (81) | $ (13,706)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 60,239 | $ 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 | $ (81) | $ (145)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 4,956 | 3,945
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (162) | (13,851)
Debt Securities, Available-for-sale, Unrealized Loss Position | 65,195 | 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 | (88) | (183)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 7,432 | 8,856
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (2,816) | (3,591)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 30,402 | 31,071
Total unrealized losses on held to maturity securities | (2,904) | (3,774)
Total fair value of unrealized losses on held to maturity securities | $ 37,835 | $ 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 | $ (4,495) | $ (4,800)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 110,386 | 111,475
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (4,495) | (4,800)
Debt Securities, Available-for-sale, Unrealized Loss Position | 110,386 | 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 | (5,637) | (6,424)
Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 43,959 | 46,032
Total unrealized losses on held to maturity securities | (5,637) | (6,424)
Total fair value of unrealized losses on held to maturity securities | $ 43,959 | $ 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 | 360 | 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 | 343 | 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 | 2 | 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 | 910 | 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 | 651 | 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

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- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without an allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-4 + Details
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