Derivative Financial Instruments - Effect of Cash Flow Hedging on AOCI (Details) - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Amount of Loss Recognized in OCI on Derivative	$ 74
Interest Rate Contract [Member]
Derivative [Line Items]
Amount of Loss Recognized in OCI on Derivative	74
Interest Rate Swap [Member]
Derivative [Line Items]
Amount of Loss Recognized in OCI on Derivative	0
Interest Expense [Member]
Derivative [Line Items]
Amount of Loss Reclassified from OCI into Income	176	$ 168
Interest Expense [Member] \| Interest Rate Contract [Member]
Derivative [Line Items]
Amount of Loss Reclassified from OCI into Income	7	0
Interest Expense [Member] \| Interest Rate Swap [Member]
Derivative [Line Items]
Amount of Loss Reclassified from OCI into Income	$ 169	$ 168

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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- Definition

The effective portion of loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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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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