Investment Securities - Summary of Credit Quality Indicators of Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	$ 691,076	$ 628,829
AA+
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	688,377
AAA
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)		626,095
Not Rated
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	2,699	2,734
U.S. Treasury Securities
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	73,188	73,044
U.S. Treasury Securities | AA+
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	73,188
U.S. Treasury Securities | AAA
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)		73,044
Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	197,060	201,809
Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises | AA+
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	197,060
Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises | AAA
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)		201,809
Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	418,129	351,242
Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises | AA+
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	418,129
Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises | AAA
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)		351,242
Municipal Securities
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	80	79
Municipal Securities | Not Rated
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	80	79
Corporate Debt
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	1,888	1,843
Corporate Debt | Not Rated
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	1,888	1,843
Other Securities
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	731	812
Other Securities | Not Rated
Schedule of Available-for-sale Securities [Line Items]
Investment securities available-for-sale (at fair value)	$ 731	$ 812