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Future Minimum Payments Under Non-Cancelable Portion of Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Commitments And Contingencies Disclosure [Abstract]  
2015 (remaining) $ 1,623us-gaap_OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear
2016 2,209us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2017 2,258us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
2018 1,226us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
2019 463us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Thereafter 1,506us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter
Total $ 9,285us-gaap_OperatingLeasesFutureMinimumPaymentsDue