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Derivative Instruments - Schedule of Location of Forward Interest Rate Swaps Designated in Hedge Relationship (Detail) (USD $)
In Thousands, unless otherwise specified
Apr. 04, 2015
Dec. 31, 2014
Liabilities:    
Other long-term liabilities $ 88,373us-gaap_OtherLiabilitiesNoncurrent $ 74,434us-gaap_OtherLiabilitiesNoncurrent
Forward Interest Rate Swap Contracts [Member]    
Liabilities:    
Other long-term liabilities 13,904us-gaap_OtherLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
2,170us-gaap_OtherLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
Total $ 13,904us-gaap_DerivativeInstrumentsAndHedgesLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
$ 2,170us-gaap_DerivativeInstrumentsAndHedgesLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember