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Commitments and Contingencies (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
2015 $ 12,323us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
2016 12,347us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2017 10,858us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
2018 9,513us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
2019 8,619us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
2020 and thereafter 36,591us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter
Total $ 90,251us-gaap_OperatingLeasesFutureMinimumPaymentsDue