Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Other Commitment Payments) (Details)

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Commitments and Contingencies (Other Commitment Payments) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]  
Remaining 2015 $ 39,330us-gaap_OtherCommitmentsFutureMinimumPaymentsRemainderOfFiscalYear
2016 52,440us-gaap_OtherCommitmentDueInSecondYear
2017 52,440us-gaap_OtherCommitmentDueInThirdYear
2018 39,330us-gaap_OtherCommitmentDueInFourthYear
Total other commitment $ 183,540us-gaap_OtherCommitment