Loans and Leases and the Allowance for Loan and Lease Losses (Troubled Debt Restrucuring & Narrative) (Details 6) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) contract	Dec. 31, 2018 USD ($) contract
Loans and Leases and the Allowance for Loan and Lease Losses
Loans modified in a TDR	$ 69,100	$ 54,000
Available commitments under Revolving Credit Lines, Modified as TDR	$ 300	$ 200
Loans Modified as a TDR
Number of Contracts | contract	441	532
Recorded Investment (as of period end)	$ 28,116	$ 14,322
Increase in Allowance (as of period end)	$ 2,564	$ 600
Commercial
Loans Modified as a TDR
Number of Contracts | contract	9	13
Recorded Investment (as of period end)	$ 21,208	$ 3,099
Increase in Allowance (as of period end)	$ 2,465	$ 170
Commercial | Commercial and Industrial
Loans Modified as a TDR
Number of Contracts | contract	8	12
Recorded Investment (as of period end)	$ 17,585	$ 1,449
Increase in Allowance (as of period end)	$ 2,465	$ 96
Commercial | Commercial Mortgage
Loans Modified as a TDR
Number of Contracts | contract	1	1
Recorded Investment (as of period end)	$ 3,623	$ 1,650
Increase in Allowance (as of period end)	$ 0	$ 74
Consumer
Loans Modified as a TDR
Number of Contracts | contract	432	519
Recorded Investment (as of period end)	$ 6,908	$ 11,223
Increase in Allowance (as of period end)	$ 99	$ 430
Consumer | Residential Mortgage
Loans Modified as a TDR
Number of Contracts | contract	1	6
Recorded Investment (as of period end)	$ 57	$ 1,458
Increase in Allowance (as of period end)	$ 0	$ 200
Consumer | Home Equity
Loans Modified as a TDR
Number of Contracts | contract	4	9
Recorded Investment (as of period end)	$ 368	$ 1,438
Increase in Allowance (as of period end)	$ 9	$ 77
Consumer | Automobile
Loans Modified as a TDR
Number of Contracts | contract	332	366
Recorded Investment (as of period end)	$ 5,911	$ 7,400
Increase in Allowance (as of period end)	$ 73	$ 128
Consumer | Other
Loans Modified as a TDR
Number of Contracts | contract	95	138
Recorded Investment (as of period end)	$ 572	$ 927
Increase in Allowance (as of period end)	$ 17	$ 25
Maximum [Member] | Residential Mortgage
Loans and Leases and the Allowance for Loan and Lease Losses
Period of time loan being fully amortized	40 years
Maximum [Member] | Land Loans
Loans and Leases and the Allowance for Loan and Lease Losses
Period of time loan being fully amortized	360 months
Extending balloon payments	5 years