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Derivative Instruments and Hedging Activities-Interest Rate Swaps (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Derivative [Line Items]
Derivative Instruments, Gain Recognized in Other Comprehensive Income (Loss), Effective Portion		$ (3)
Amount of loss recognized in OCI on derivative (effective portion)	$ 230		$ 1,522	$ 23
Accrued payroll and other operating expenses
Derivative [Line Items]
Interest rate derivative at fair value	1,034		1,034		$ 381
Cash Flow Hedging | Interest Expense | Interest Rate Swap
Derivative [Line Items]
Amount of loss reclassified from accumulated OCI into income (effective portion)	$ 434	$ 480	$ 869	$ 950

X

- Definition

The effective portion of net gain (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



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

+ References

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

+ References

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-Publisher FASB



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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

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