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Investment Securities - Summary of Held-to-Maturity Securities, Unrealized Losses (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Schedule of Held-to-maturity Securities [Line Items] |  |
Fair Value, Less than 12 months | $ 16,978 | $ 165,656
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (109) | (6,365)
Fair Value, 12 months or more | 452,822 | 360,935
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (80,843) | (85,401)
Total Fair Value | 469,800 | 526,591
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss | (80,952) | (91,766)
U.S. Treasury Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Fair Value, Less than 12 months |  | 47,629
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | (1,416)
Fair Value, 12 months or more | 48,334 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (1,004) |
Total Fair Value | 48,334 | 47,629
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss | (1,004) | (1,416)
Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]. |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Fair Value, Less than 12 months | 14,689 | 83,323
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (72) | (3,804)
Fair Value, 12 months or more | 217,467 | 182,159
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (34,480) | (37,358)
Total Fair Value | 232,156 | 265,482
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss | (34,552) | (41,162)
Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Fair Value, Less than 12 months | 2,289 | 34,704
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (37) | (1,145)
Fair Value, 12 months or more | 187,021 | 178,776
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (45,359) | (48,043)
Total Fair Value | 189,310 | 213,480
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ (45,396) | $ (49,188)

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- Definition Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for 12 months or longer. + References No definition available. + Details
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