Loans (Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	$ 13,197	$ 17,408
Accruing loans 90 days or more past due	0	0
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	0	603
Commercial & Industrial [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	0	657
Total Commercial [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	0	1,260
Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	11,981	14,297
Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	1,128	1,763
Other Consumer [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	88	88
Total Consumer [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	$ 1,216	$ 1,851