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Future Minimum Lease Commitments (Detail) (USD $)
In Thousands, unless otherwise specified
Feb. 28, 2015
Future Minimum Payments Under Non-Cancelable Operating Leases With Initial Terms Of One-Year Or More [Line Items]  
Remaining 2015 $ 332us-gaap_OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear
2016 814us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2017 213us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
2018 60us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
2019 19us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Thereafter $ 19us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter