Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments (Narrative) (Details)

v2.4.1.9
Derivative Financial Instruments (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Derivative Financial Instruments [Abstract]      
Maximum net exposure to counterparty $ 6,517bde_MaximumNetExposureToCounterparty    
Cash flow hedge gain (loss) reclassified to revenue 1,706us-gaap_Revenues (334)us-gaap_Revenues  
Accumulated derivative instrument gain (3,144)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax   (1,891)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
Adjustment to accumulated other comprehensive income $ 1,253us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax $ 58us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax