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Troubled Debt Restructuring Modifications (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts	1	0	2	1
Financing Receivable, Modification, Pre-Modification Recorded Investment	$ 34	$ 0	$ 1,309	$ 1,509
Financing Receivable, Modifications, Post-Modifications Recorded Investment	$ 34	$ 0	$ 1,300	$ 1,509
Commercial and Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts	1		1
Financing Receivable, Modification, Pre-Modification Recorded Investment	$ 34		$ 34
Financing Receivable, Modifications, Post-Modifications Recorded Investment	$ 34		$ 34
Commercial Real Estate Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts	0	0	1	1
Financing Receivable, Modification, Pre-Modification Recorded Investment	$ 0	$ 0	$ 1,275	$ 1,509
Financing Receivable, Modifications, Post-Modifications Recorded Investment	$ 0	$ 0	$ 1,266	$ 1,509
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts	0	0	1	1
Financing Receivable, Modification, Pre-Modification Recorded Investment	$ 0	$ 0	$ 1,275	$ 1,509
Financing Receivable, Modifications, Post-Modifications Recorded Investment	$ 0	$ 0	$ 1,266	$ 1,509

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Number of 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 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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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=66008989&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=66008989&loc=SL6953676-111524

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