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Investment Securities - Summary of Held-to-maturity Investment Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-maturity Securities | $ 554,686 | $ 585,052
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 31 | 228
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | (85,828) | (80,952)
Fair value | 468,889 | 504,328
U.S. Treasury Securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-maturity Securities | 49,487 | 49,338
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | (1,145) | (1,004)
Fair value | 48,342 | 48,334
Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-maturity Securities | 279,941 | 299,337
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 31 | 226
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | (37,427) | (34,552)
Fair value | 242,545 | 265,011
Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-to-maturity Securities | 225,258 | 236,377
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain |  | 2
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | (47,256) | (45,396)
Fair value | $ 178,002 | $ 190,983

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