Loans and Credit Quality - Troubled Debt Restructured Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	$ 1,751
Existing Troubled Debt Restructurings	6,109
Total	7,860	$ 10,100
Commercial | Asset Quality Rating - Substandard
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	1,751
Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	1,590
Existing Troubled Debt Restructurings	765
Total	2,355
Accrual Status | Commercial | Asset Quality Rating - Substandard
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	1,590
Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	161
Existing Troubled Debt Restructurings	5,344
Total	5,505
Nonaccrual Status | Commercial | Asset Quality Rating - Substandard
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	$ 161