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Commitments and Contingencies - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2023
Commitments, Contingencies and Guarantees [Line Items]                
Off-balance-sheet credit exposure $ 2,971 $ 2,966 $ 2,971 $ 2,966 $ 2,939 $ 3,218 $ 3,071 $ 3,567
Off-balance-sheet, liability, credit loss expense (reversal), net of acquisition adjustment     (243)          
Benefit for credit losses - credit commitments $ (247) $ (105) 32 $ (601)        
Financial Standby Letters of Credit                
Commitments, Contingencies and Guarantees [Line Items]                
Commitments to extend credit     $ 66,800   $ 64,300