Loans and Leases - Mortgages in Process of Foreclosure (Details) - Residential Real Estate [Member] - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Modifications [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	$ 812	$ 31
Real Estate Residential Secured For Personal Purpose [Member]
Financing Receivable, Modifications [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	0	31
Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Modifications [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	$ 812	$ 0