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Commitments and Contingencies - Schedule of Future Minimum Payments Under Non-Cancelable Operating Leases (Detail) (USD $)
Dec. 31, 2014
Sep. 12, 2014
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]    
Operating lease obligations, Total $ 188,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue $ 205,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue
Operating lease obligations, 2015 68,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent  
Operating lease obligations, 2016 69,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears  
Operating lease obligations, 2017 $ 51,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears