Loans and Leases (Information Related To Loans Modified In Troubled Debt Restructuring, By Class) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) contract	Dec. 31, 2015 USD ($) contract
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	2	5
Recorded investment (as of period end)	$ 1,531	$ 1,681
Increase in allowance (as of period end)	$ 344	$ 647
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts | contract		1
Recorded investment (as of period end)		$ 500
Increase in allowance (as of period end)		$ 331
Commercial Real Estate: Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts | contract		4
Recorded investment (as of period end)		$ 1,181
Increase in allowance (as of period end)		$ 316
Consumer Home Equity Line Of Credit [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	1
Recorded investment (as of period end)	$ 650
Increase in allowance (as of period end)	$ 167
Number of contracts, subsequent default | contract	1
Recorded investment (as of period end), subsequent default	$ 650
Residential: Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	1
Recorded investment (as of period end)	$ 881
Increase in allowance (as of period end)	$ 177