Loans - Troubled Debt Restructurings on Payments (Details) - Subsequently Defaulted [Member] $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($) Loan	Sep. 30, 2020 USD ($) Loan	Sep. 30, 2019 USD ($) Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Loan	5	19	5
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 343	$ 1,570	$ 2,385
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Loan	2	8	1
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 211	$ 647	$ 76
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Loan	2	4
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 128	$ 322
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Loan		2	3
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $		$ 250	$ 2,248
Home Equity and Improvement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Loan	1	4	1
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 4	$ 330	$ 61
Consumer Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Loan		1
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $		$ 21