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Investment Securities - Summary of Available-for-Sale Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 678,965	$ 617,947
Gross unrealized gains	2,785	485
Gross unrealized losses	(69,031)	(90,885)
Fair value	612,719	527,547
U.S. Treasury securities
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	72,930	24,958
Gross unrealized gains	1,032
Gross unrealized losses		(84)
Fair value	73,962	24,874
Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	229,757	164,785
Gross unrealized gains	1,113	53
Gross unrealized losses	(22,353)	(29,793)
Fair value	208,517	135,045
Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	373,555	425,476
Gross unrealized gains	640	432
Gross unrealized losses	(46,668)	(60,970)
Fair value	327,527	364,938
Corporate debt
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	2,000	2,000
Gross unrealized losses	(10)	(38)
Fair value	1,990	1,962
Other securities
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	723	728
Fair value	$ 723	$ 728

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