Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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The aggregate fair value of assets needed to immediately settle the derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4H
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No definition available.

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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.

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-Publisher FASB
-Name Accounting Standards Codification
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The effective portion of loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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-Publisher FASB
-Name Accounting Standards Codification
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The net gain (loss) during the reporting period due to ineffectiveness in interest rate cash flow hedges. Recognized in earnings.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 4C
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The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
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-Paragraph 4B
-Subparagraph (c)(1)
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Number of interest rate derivative instruments held by the entity at the reporting date.

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Derivative Instruments (Details) $ in Thousands	3 Months Ended
Derivative Instruments (Details) $ in Thousands	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Apr. 01, 2018	Dec. 31, 2017 USD ($)
Interest Rate Derivatives [Abstract]
Number of interest rate swaps	3
Fair value	$ 1,400			$ 2,200
Aggregate notional amount	95,500			$ 96,200
Reclassification during next 12 months	300
Termination value	1,400
Interest Rate Swap [Member] \| Other Comprehensive Income (Loss) [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain related to the effective portion recognized in other comprehensive income (loss)	402	$ 138
Interest Rate Swap [Member] \| Interest Expense [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of loss related to the effective portion subsequently reclassified to interest expense	(16)	(186)
Amount of (loss) gain related to the ineffective portion recognized in interest expense	$ (27)	$ 22
Debt Repayment [Member] \| Subsequent Event [Member]
Interest Rate Derivatives [Abstract]
Number of interest rate swaps			1