Allowance for Credit Losses and Credit Quality of Loans, Allowance for Credit Losses on Off-Balance Sheet Credit Exposures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for Credit Losses and Credit Quality of Loans [Abstract]
Allowance for credit losses	$ 116,000	$ 114,400	$ 100,800	$ 92,000
Unfunded Loan Commitments [Member]
Allowance for Credit Losses and Credit Quality of Loans [Abstract]
Allowance for credit losses	4,400	5,100
Reserve for credit losses	$ (700)	100	$ 100
Salisbury acquisition-related provision for credit losses		$ 800