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Other Long-Term Obligations and Commitments - Summary of Future Minimum Lease Payments for Non-Cancelable Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]  
2015 $ 460us-gaap_OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear
2016 546us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2017 46us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
Total minimum payments $ 1,052us-gaap_OperatingLeasesFutureMinimumPaymentsDue