Loans and Credit Quality - Troubled Debt Restructured Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	$ 3,151
Existing Troubled Debt Restructurings	6,955
Total	10,106	$ 14,800
Commercial | Asset Quality Rating - Substandard
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	2,969
Real estate term owner occupied | Asset Quality Rating - Substandard
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	182
Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	318
Existing Troubled Debt Restructurings	1,130
Total	1,448
Accrual Status | Commercial | Asset Quality Rating - Substandard
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	318
Accrual Status | Real estate term owner occupied | Asset Quality Rating - Substandard
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	0
Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	2,833
Existing Troubled Debt Restructurings	5,825
Total	8,658
Nonaccrual Status | Commercial | Asset Quality Rating - Substandard
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	2,651
Nonaccrual Status | Real estate term owner occupied | Asset Quality Rating - Substandard
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	$ 182