Borrowed Funds (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024
Disclosure of Repurchase Agreements [Abstract]
Amount of line of credit with correspondent banks	$ 101,000,000
Credit facility with Federal Reserve Bank	313,000,000
Line of credit with correspondent banks and credit facility with Federal Reserve Of Boston	$ 0
Federal Home Loan Bank Advances
Interest rate, due in next twelve months		0.00%
Interest rate, due in year two	4.12%	0.00%
Interest rate, due in year three	3.86%
Interest rate, due in year four	0.00%	0.00%
Interest rate, due in year five and thereafter		2.89%
Due in twelve months maturity	$ 42,000,000	$ 0
Due in year two maturity	35,000,000	0
Due in year three maturity	35,000,000	70,000,000
Due in year four maturity	0	0
Due thereafter	25,500,000
Due in year five maturity		25,000,000
Total	137,500,000	95,000,000
Repurchase agreements for municipal and commercial customers	50,321,000	51,278,000
Total	$ 187,821,000	$ 146,278,000	$ 152,968,000	$ 196,170,000	$ 185,444,000	$ 151,027,000	$ 230,620,000	$ 154,779,000
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	3.20%
Interest rate, due in year three		3.97%
Interest rate, due in year five and thereafter	0.00%
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)	1 year
Federal Home Loan Bank Advances
Interest rate, due in next twelve months	3.87%
Interest rate, due in year three		4.12%
Interest rate, due in year five and thereafter	3.20%
Interest rate, Repurchase agreements for municipal and commercial customers	4.03%	5.00%