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Investment Securities - Unrealized Losses on Securities Available-for-Sale (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 564,892 | $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (3,247) | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 1,365,958 | 2,298,565
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (277,257) | (352,454)
Debt Securities, Available-for-sale, Unrealized Loss Position | 1,930,850 | 2,298,565
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (280,504) | (352,454)
Residential Mortgage Backed Securities [Member] |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 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, 12 Months or Longer | 861,840 | 1,187,609
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (189,761) | (201,192)
Debt Securities, Available-for-sale, Unrealized Loss Position | 861,840 | 1,187,609
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (189,761) | (201,192)
Commercial Mortgage Backed Securities [Member] |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 40,291 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (87) | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 11,273 | 253,306
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (959) | (15,333)
Debt Securities, Available-for-sale, Unrealized Loss Position | 51,564 | 253,306
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (1,046) | (15,333)
Government agency and government-sponsored enterprise collateralized mortgage obligations [Member] |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 273,347 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (1,994) | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 104,757 | 284,334
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (18,917) | (36,650)
Debt Securities, Available-for-sale, Unrealized Loss Position | 378,104 | 284,334
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (20,911) | (36,650)
US States and Political Subdivisions Debt Securities [Member] |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 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, 12 Months or Longer | 594 | 28,083
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (8) | (1,109)
Debt Securities, Available-for-sale, Unrealized Loss Position | 594 | 28,083
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (8) | (1,109)
Corporate Debt Securities [Member] |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 15,968 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (32) | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 241,744 | 265,431
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (31,354) | (60,254)
Debt Securities, Available-for-sale, Unrealized Loss Position | 257,712 | 265,431
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (31,386) | (60,254)
Private Label Collateralized Mortgage Obligations [Member] |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 180,915 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (1,031) | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 129,178 | 158,412
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (34,681) | (34,659)
Debt Securities, Available-for-sale, Unrealized Loss Position | 310,093 | 158,412
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (35,712) | (34,659)
Collateralized Loan Obligations [Member] |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 38,771 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (29) | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 0 | 66,886
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 | (752)
Debt Securities, Available-for-sale, Unrealized Loss Position | 38,771 | 66,886
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (29) | (752)
Mortgage-backed Securities, Issued by Private Enterprises |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 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, 12 Months or Longer | 12,372 | 20,813
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (1,213) | (1,313)
Debt Securities, Available-for-sale, Unrealized Loss Position | 12,372 | 20,813
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (1,213) | (1,313)
Asset-backed Securities [Member] |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 15,600 | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (74) | 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 0 | 19,952
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 | (289)
Debt Securities, Available-for-sale, Unrealized Loss Position | 15,600 | 19,952
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (74) | (289)
SBA asset-backed securities [Member] |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 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, 12 Months or Longer | 4,200 | 13,739
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (364) | (903)
Debt Securities, Available-for-sale, Unrealized Loss Position | 4,200 | 13,739
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (364) | $ (903)

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