Annual report pursuant to Section 13 and 15(d)

Derivative Instruments and Hedging Activities - Effects of Derivative Instruments in Accumulated Other Comprehensive Income (Details)

v2.4.1.9
Derivative Instruments and Hedging Activities - Effects of Derivative Instruments in Accumulated Other Comprehensive Income (Details) (USD $)
 3 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]        
Loss Recognized in Accumulated Other Comprehensive (Loss) Income, Net   $ (2,217,000)us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax $ 3,427,000us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax $ (667,000)us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
Interest Expense Reclassified from Accumulated Other Comprehensive (Loss) Income, Net into Other Expenses, Net 566,000us-gaap_DerivativeInstrumentsLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortion      
Designated as Hedging Instrument | Interest Rate Swap        
Derivative Instruments, Gain (Loss) [Line Items]        
Loss Recognized in Accumulated Other Comprehensive (Loss) Income, Net   2,217,000us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		   
Interest Expense Reclassified from Accumulated Other Comprehensive (Loss) Income, Net into Other Expenses, Net   $ 1,222us-gaap_DerivativeInstrumentsLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortion
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember