Loans and Allowance for Loan and Lease Losses (Non-accrual Loans by Classes of the Loan Portfolio Including Loans Acquired With Credit Deterioration) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, nonaccrual status	$ 4,926	$ 10,749
Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, nonaccrual status	30	34
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, nonaccrual status	5	4,555
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, nonaccrual status	3,967	4,291
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, nonaccrual status	40	367
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, recorded investment, nonaccrual status	$ 884	$ 1,502