v3.26.1
Other Commitments and Contingencies - Off-Balance-Sheet Financial Instruments Related to Credit Risk (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Off-balance-sheet financial instruments related to credit risk $ 347,187 $ 410,668
Unadvanced Lines of Credit    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Off-balance-sheet financial instruments related to credit risk 258,739 314,578
Unadvanced Construction Loans    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Off-balance-sheet financial instruments related to credit risk 27,799 32,613
Residential Mortgage Loan Commitments    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Off-balance-sheet financial instruments related to credit risk 3,976 8,090
Commercial and Mortgage Loan Commitments    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Off-balance-sheet financial instruments related to credit risk 51,947 50,845
Standby Letters of Credit    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Off-balance-sheet financial instruments related to credit risk $ 4,726 $ 4,542