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v3.25.3

Securities Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value (Details) $ in Thousands | Sep. 30, 2025 USD ($) | Dec. 31, 2024 USD ($)
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Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 934 | 1,202
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 603,291 | $ 3,846,190
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 6,167,256 | 6,381,398
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 6,770,547 | 10,227,588
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 2,248 | 53,117
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 318,279 | 514,129
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 320,527 | $ 567,246
U.S. Treasury [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 1 | 1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 0 | $ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 972 | 945
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 972 | 945
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 28 | 55
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 28 | $ 55
Municipal securities [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 89 | 113
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 1,035 | $ 1,041
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 186,386 | 222,432
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 187,421 | 223,473
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 1 | 13
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 8,015 | 14,949
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 8,016 | $ 14,962
Residential agency mortgage-backed securities [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 606 | 831
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 456,786 | $ 3,561,318
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 2,919,538 | 2,880,641
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 3,376,324 | 6,441,959
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 1,936 | 50,102
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 137,331 | 224,345
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 139,267 | $ 274,447
Residential non-agency mortgage-backed securities [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 33 | 36
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 44,977 | $ 93,113
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 442,525 | 457,701
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 487,502 | 550,814
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 84 | 1,124
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 30,354 | 43,456
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 30,438 | $ 44,580
Commercial agency mortgage-backed securities [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 204 | 220
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 100,493 | $ 190,718
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 2,617,362 | 2,819,206
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 2,717,855 | 3,009,924
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 227 | 1,878
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 142,524 | 231,297
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 142,751 | $ 233,175
Other debt securities [Member] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 1 | 1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 0 | $ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 473 | 473
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 473 | 473
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 27 | 27
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 27 | $ 27

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