Allowance for Credit Losses and Credit Quality of Loans, Amortized Cost Basis of Loans Modified to Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Interest Rate Reduction [Member]
Modified Loans Disaggregated by Class of Financing Receivable and Type of Concession Granted [Abstract]
Amortized cost		$ 30
Term Extension [Member]
Modified Loans Disaggregated by Class of Financing Receivable and Type of Concession Granted [Abstract]
Amortized cost	$ 117	184	$ 894	$ 478
Combination - Term Extension and Interest Rate Reduction [Member]
Modified Loans Disaggregated by Class of Financing Receivable and Type of Concession Granted [Abstract]
Amortized cost	28		28	30
Residential [Member] \| Interest Rate Reduction [Member]
Modified Loans Disaggregated by Class of Financing Receivable and Type of Concession Granted [Abstract]
Amortized cost		$ 30
% of total class of financing receivables		0.001%
Residential [Member] \| Term Extension [Member]
Modified Loans Disaggregated by Class of Financing Receivable and Type of Concession Granted [Abstract]
Amortized cost	$ 117	$ 184	$ 894	$ 478
% of total class of financing receivables	0.004%	0.007%	0.028%	0.018%
Residential [Member] \| Combination - Term Extension and Interest Rate Reduction [Member]
Modified Loans Disaggregated by Class of Financing Receivable and Type of Concession Granted [Abstract]
Amortized cost	$ 28		$ 28	$ 30
% of total class of financing receivables	0.001%		0.001%	0.001%