v3.25.2
Borrowings (Narrative) (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Federal Home Loan Bank, Advances, Branch of FHLBB Bank [Line Items]    
Federal Home Loan Bank advances $ 1,001,000 $ 1,125,000
Federal Home Loan Bank of Boston    
Federal Home Loan Bank, Advances, Branch of FHLBB Bank [Line Items]    
Federal Home Loan Bank advances 1,001,000 1,100,000
Unused remaining available borrowing capacity with FHLB 987,100 753,000
Unused line of credit with FHLB 40,000 40,000
Standby letter of credit with FHLB $ 66,000 $ 66,000