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Investment Securities - Narrative (Details)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
security
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
security
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
security
Debt Securities, Available-for-Sale [Line Items]          
Equity securities $ 6,113,000   $ 6,113,000   $ 5,814,000
Fair value adjustment through earnings 104,000 $ 79,000 299,000 $ 38,000  
Provision for (reversal of) credit losses, other debt securities $ (104,000) $ (7,000) $ (108,000) $ 7,000  
Available for sale securities, number of positions | security 114   114   111
Unrealized loss $ 7,306,000   $ 7,306,000   $ 10,938,000
Debt Securities, available-for-sale, impairment loss     0    
Securities past due or on nonaccrual $ 0   $ 0   $ 0
Held to maturity securities, number of positions | security 173   173   187
Net unrealized losses $ 6,500,000   $ 6,500,000   $ 10,400,000
Restricted securities 20,364,000   20,364,000   20,253,000
Held-to-maturity, amortized cost 433,535,000   433,535,000   481,280,000
Collateral Pledged          
Debt Securities, Available-for-Sale [Line Items]          
Restricted securities 67,644,000   67,644,000   67,926,000
Held-to-maturity, amortized cost $ 211,434,000   $ 211,434,000   $ 197,474,000