Loans and Leases (Non-Accrual Loans, Segregated by Class) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Non-accrual loans	$ 3,769	$ 3,674
Impaired loans	6,340	4,665
Commercial And Industrial [Member]
Financing Receivable, Past Due [Line Items]
Non-accrual loans	590	336
Impaired loans	590	336
Commercial Real Estate: Non-Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Non-accrual loans	846	510
Impaired loans	2,848	924
Commercial Real Estate: Owner Occupied [Member]
Financing Receivable, Past Due [Line Items]
Non-accrual loans	1,123	1,447
Impaired loans	1,692	2,024
Consumer: Home Equity Installment [Member]
Financing Receivable, Past Due [Line Items]
Non-accrual loans	61	65
Impaired loans	61	65
Consumer: Home Equity Line Of Credit [Member]
Financing Receivable, Past Due [Line Items]
Non-accrual loans	395	294
Impaired loans	395	294
Consumer: Auto Loans [Member]
Financing Receivable, Past Due [Line Items]
Non-accrual loans	27	16
Impaired loans	27	16
Residential: Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Non-accrual loans	727	1,006
Impaired loans	727	$ 1,006
Purchase Credit [Member]
Financing Receivable, Past Due [Line Items]
Impaired loans	$ 1,300