Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities- Effects on statements of income and consolidated statements of comprehensive income (Details)

v2.4.1.9
Derivative Instruments and Hedging Activities- Effects on statements of income and consolidated statements of comprehensive income (Details) (Derivatives Designated as Hedging Instruments, Interest rate swap instruments, USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Derivatives Designated as Hedging Instruments | Interest rate swap instruments
   
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain Recognized in Net Loss $ (83)us-gaap_GainLossOnDerivativeInstrumentsNetPretax
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
$ (129)us-gaap_GainLossOnDerivativeInstrumentsNetPretax
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember