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