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Commitments and Contingencies - Fixed Minimum Rental Payments Due under Operating Leases with Non-Cancelable Terms (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
2015 $ 3,415us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
2016 3,434us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2017 3,443us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
2018 3,436us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
2019 3,055us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Thereafter 84,759us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter
Minimum rental payments, total $ 101,542us-gaap_OperatingLeasesFutureMinimumPaymentsDue