Quarterly report pursuant to Section 13 or 15(d)

Commitments And Contingencies (Details)

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Commitments And Contingencies (Details) (USD $)
Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]  
Inventory purchase obligations $ 579,916,000us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount