Fair Value Measurements - Tables of Financial Instruments Measured At Fair Value on Recurring Basis (Details) - Fair value, recurring basis - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	$ 667,309	$ 591,337
Total liabilities at fair value	11,336	9,086
U.S. Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	73,962	24,874
Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	208,517	135,045
Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	327,527	364,938
Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	1,990	1,962
Equity securities with readily determinable fair values
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	4,113
Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	22,252	24,495
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	78,075	24,874
Level 1 \| U.S. Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	73,962	24,874
Level 1 \| Equity securities with readily determinable fair values
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	4,113
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	588,822	566,077
Total liabilities at fair value	11,322	9,076
Level 2 \| Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	208,517	135,045
Level 2 \| Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	327,527	364,938
Level 2 \| Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	1,990	1,962
Level 2 \| Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	22,252	24,495
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	412	386
Total liabilities at fair value	14	10
Interest rate swap \| Derivative
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	28,536	39,637
Total liabilities at fair value	11,322	9,076
Interest rate swap \| Level 2 \| Derivative
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	28,536	39,637
Total liabilities at fair value	11,322	9,076
Mortgage banking derivatives \| Derivative
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	412	386
Total liabilities at fair value	14	10
Mortgage banking derivatives \| Level 3 \| Derivative
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets at fair value	412	386
Total liabilities at fair value	$ 14	$ 10