Commitments, Contingencies and Financial Instruments with Off-Balance Sheet Risk and Concentrations of Credit Risk (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) payment	Dec. 31, 2023 USD ($)
Other Commitments [Line Items]
Commitments to originate loans	$ 35,327	$ 41,326
Commitments to sell residential mortgage loans	520	200
Letters of credit	20,166	15,610
Residential mortgages
Other Commitments [Line Items]
Commitments to originate residential mortgages loans for sale	$ 1,008	0
Early payment default period | payment	4
Commercial real estate
Other Commitments [Line Items]
Unadvanced portions	$ 60,947	87,943
Commercial and industrial
Other Commitments [Line Items]
Unadvanced portions	651,658	633,702
Commercial and residential construction
Other Commitments [Line Items]
Unadvanced portions	227,545	540,269
Home equity
Other Commitments [Line Items]
Unadvanced portions	163,515	156,216
Consumer Loan
Other Commitments [Line Items]
Unadvanced portions	$ 3,503	$ 3,679