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Loans and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 4,216,000	$ 5,368,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	4,746,000	4,823,000
Financing Receivable, Modifications, Recorded Investment	3,030,000	3,515,000
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	3,457,000	4,569,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	4,003,000	4,031,000
Financing Receivable, Modifications, Recorded Investment	2,407,000	2,871,000
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment		40,000
Financing Receivable, Modifications, Post-Modification Recorded Investment		35,000
Financing Receivable, Modifications, Recorded Investment		5,000
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	759,000	759,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	743,000	757,000
Financing Receivable, Modifications, Recorded Investment	$ 623,000	$ 639,000

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ 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=84173941&loc=SL6953676-111524

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Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ 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=84173941&loc=SL6953676-111524

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

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=82895541&loc=d3e18845-111554

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