Loans (Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	$ 10,521	$ 15,211
Accruing loans 90 days or more past due	0	0
Current Payment Status [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans current on payment	3,500	3,400
Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	0	4,954
Commercial & Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	397	283
Total Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	397	5,237
Residential Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	9,340	9,414
Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	771	544
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	13	16
Total Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	$ 784	$ 560

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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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.

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- Definition

Reflects carrying amount of loans on which no interest is being recognized, but are current as to the payment of principal and interest.

+ References

No definition available.

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