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Troubled Debt Restructing Modifications (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts	2	3
Financing Receivable, Modification, Pre-Modification Recorded Investment	$ 1,309	$ 3,147
Financing Receivable, Modifications, Post-Modifications Recorded Investment	$ 1,300	$ 3,137
Commercial and Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts		1
Financing Receivable, Modification, Pre-Modification Recorded Investment		$ 34
Financing Receivable, Modifications, Post-Modifications Recorded Investment		$ 34
Commercial Real Estate Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts	1	3
Financing Receivable, Modification, Pre-Modification Recorded Investment	$ 1,275	$ 3,147
Financing Receivable, Modifications, Post-Modifications Recorded Investment	$ 1,266	$ 3,137
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts	1	3
Financing Receivable, Modification, Pre-Modification Recorded Investment	$ 1,275	$ 3,147
Financing Receivable, Modifications, Post-Modifications Recorded Investment	$ 1,266	$ 3,137

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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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- Definition

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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