Loans and Credit Quality - Restructured Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	$ 3,281
Existing Troubled Debt Restructurings	9,345
Total	12,626	$ 10,100
Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	3,281
Existing Troubled Debt Restructurings	1,108
Total	4,389
Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	0
Existing Troubled Debt Restructurings	8,237
Total	8,237
Commercial | AQR Substandard
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	3,281
Commercial | AQR Substandard | Accrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	3,281
Commercial | AQR Substandard | Nonaccrual Status
Financing Receivable, Troubled Debt Restructuring [Line Items]
New Troubled Debt Restructurings	$ 0