Borrowed Funds (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Disclosure of Repurchase Agreements [Abstract]
Amount of line of credit with correspondent banks	$ 76,000,000
Credit facility with Federal Reserve Bank	224,000,000
Line of credit with correspondent banks and credit facility with Federal Reserve Of Boston	$ 0
Federal Home Loan Bank Advances
Interest rate, due in year two	0.00%	0.00%
Interest rate, due in year three	0.00%	0.00%
Interest rate, due in year four	0.00%	0.00%
Interest rate, due in year five and thereafter	0.00%	0.00%
Due in twelve months maturity	$ 20,076,000	$ 38,990,000
Due in year two maturity	0	84,000
Due in year three maturity	0	0
Due in year four maturity	0	0
Due thereafter	0
Due in year five maturity		0
Total	20,076,000	39,074,000
Repurchase agreements for municipal and commercial customers	49,576,000	64,409,000
Total	$ 69,652,000	$ 103,483,000	$ 82,993,000	$ 114,481,000	$ 83,881,000	$ 118,343,000	$ 126,588,000	$ 133,712,000
Minimum
Disclosure of Repurchase Agreements [Abstract]
Range of repurchase agreements' maturity dates (days)	1 day
Federal Home Loan Bank Advances
Interest rate, due in next twelve months	0.00%	4.26%
Interest rate, Repurchase agreements for municipal and commercial customers	0.05%	0.05%
Maximum
Disclosure of Repurchase Agreements [Abstract]
Range of repurchase agreements' maturity dates (days)	3 days
Federal Home Loan Bank Advances
Interest rate, due in next twelve months	5.54%	4.38%
Interest rate, Repurchase agreements for municipal and commercial customers	5.05%	3.55%