Loans, Allowance for Credit Losses and Credit Quality TDR on Financing Receivables Post Modification (Details) - USD ($)		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	[1]		$ 18,212,000
Financing Receivable, Troubled Debt Restructuring, Increase (Decrease) from Modification			18,212,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default		$ 0	0
Extended Maturity [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			4,064,000
Combination rate and maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 14,148,000

[1] The pre-modification and post-modification balances represent the legal principal balance of the loan. During the three months ended March 31, 2021, there were two relationships amounting to $14.3 million that related to additional modifications on previously existing TDRs.