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Future Minimum Payments Under Non Cancelable Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Leases Future Minimum Payments [Line Items]  
2015 $ 15,976us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
2016 15,417us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2017 12,072us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
2018 8,394us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
2019 6,807us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Thereafter 50,584us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter
Total $ 109,250us-gaap_OperatingLeasesFutureMinimumPaymentsDue