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Investment Securities - Summary of Held-to-maturity Investment Securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Schedule of Held-to-maturity Securities [Line Items]    
Held-to-maturity Securities $ 717,232 $ 533,108
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain 3,015 51
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss (67,022) (81,773)
Fair value 653,225 451,386
U.S. Treasury securities    
Schedule of Held-to-maturity Securities [Line Items]    
Held-to-maturity Securities 24,781 49,639
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss (212) (480)
Fair value 24,569 49,159
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 253,329 271,105
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain 337 51
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss (28,111) (36,870)
Fair value 225,555 234,286
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 439,122 212,364
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain 2,678  
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss (38,699) (44,423)
Fair value $ 403,101 $ 167,941