Loans and Leases and the Allowance for Loan and Lease Losses (Troubled Debt Restructuring & Narrative) (Details 6) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2017 USD ($) contract	Jun. 30, 2016 USD ($) contract	Jun. 30, 2017 USD ($) contract	Jun. 30, 2016 USD ($) contract	Dec. 31, 2016 USD ($)
Information related to loans modified as a TDR
Recorded Investment	$ 57,500		$ 57,500		$ 60,000
Available Commitments to Lend Additional Funds on Loans Modified as TDR			$ 0		$ 400
Number of Contracts \| contract	147	110	337	230
Recorded Investment (as of period end)	$ 7,314	$ 4,643	$ 13,776	$ 7,882
Increase in Allowance (as of period end)	$ 72	$ 30	$ 138	$ 90
Residential Mortgage \| Maximum
Information related to loans modified as a TDR
Period of Time Loan Being Fully Amortized			40 years
Land Loan \| Maximum
Information related to loans modified as a TDR
Period of Time Loan Being Fully Amortized			360 months
Extending Balloon Payments			5 years
Commercial
Information related to loans modified as a TDR
Number of Contracts \| contract	7	16	13	18
Recorded Investment (as of period end)	$ 4,891	$ 2,955	$ 8,331	$ 3,102
Increase in Allowance (as of period end)	$ 11	$ 0	$ 11	$ 2
Commercial \| Commercial and Industrial
Information related to loans modified as a TDR
Number of Contracts \| contract	6	16	11	18
Recorded Investment (as of period end)	$ 4,191	$ 2,955	$ 7,235	$ 3,102
Increase in Allowance (as of period end)	$ 11	$ 0	$ 11	$ 2
Commercial \| Commercial Mortgage
Information related to loans modified as a TDR
Number of Contracts \| contract	1	0	2	0
Recorded Investment (as of period end)	$ 700	$ 0	$ 1,096	$ 0
Increase in Allowance (as of period end)	$ 0	$ 0	$ 0	$ 0
Consumer
Information related to loans modified as a TDR
Number of Contracts \| contract	140	94	324	212
Recorded Investment (as of period end)	$ 2,423	$ 1,688	$ 5,445	$ 4,780
Increase in Allowance (as of period end)	$ 61	$ 30	$ 127	$ 88
Consumer \| Residential Mortgage
Information related to loans modified as a TDR
Number of Contracts \| contract	0	1	0	4
Recorded Investment (as of period end)	$ 0	$ 440	$ 0	$ 1,610
Increase in Allowance (as of period end)	$ 0	$ 0	$ 0	$ 15
Consumer \| Home Equity
Information related to loans modified as a TDR
Number of Contracts \| contract	1	0	1	1
Recorded Investment (as of period end)	$ 4	$ 0	$ 239	$ 478
Increase in Allowance (as of period end)	$ 4	$ 0	$ 4	$ 6
Consumer \| Automobile
Information related to loans modified as a TDR
Number of Contracts \| contract	99	53	209	108
Recorded Investment (as of period end)	$ 2,115	$ 977	$ 4,315	$ 2,008
Increase in Allowance (as of period end)	$ 49	$ 22	$ 99	$ 48
Consumer \| Other
Information related to loans modified as a TDR
Number of Contracts \| contract	40	40	114	99
Recorded Investment (as of period end)	$ 304	$ 271	$ 891	$ 684
Increase in Allowance (as of period end)	$ 8	$ 8	$ 24	$ 19

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

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