Loans and Leases and the Allowance for Loan and Lease Losses (Troubled Debt Restructuring's that Defaulted During the Period) (Details 7) $ in Thousands	12 Months Ended
Dec. 31, 2017 USD ($) contract	Dec. 31, 2016 USD ($) contract
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	68	64
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 1,443	$ 2,253
Minimum
Information related to loans modified as a TDR
Default period past due following modification of loans in TDR (in days)	60 days
Commercial
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	2	0
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 389	$ 0
Commercial \| Commercial and Industrial
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	1	0
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 48	$ 0
Commercial \| Commercial Mortgage
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	1	0
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 341	$ 0
Consumer
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	66	64
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 1,054	$ 2,253
Consumer \| Residential Mortgage
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	1	4
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 94	$ 1,445
Consumer \| Home Equity
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	1	1
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 237	$ 157
Consumer \| Automobile
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	28	19
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 515	$ 373
Consumer \| Other
Information related to loans modified as a TDR
Number of Contracts, TDRs that Defaulted \| contract	36	40
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 208	$ 278

Represents the number of days past due following modification of loans in a troubled debt restructuring, when a loan is considered to be in default.

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524

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- Definition

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

+ References

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