Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Summary of Future Minimum Lease Payments under Capital Leases (Detail)

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Commitments and Contingencies - Summary of Future Minimum Lease Payments under Capital Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Commitments And Contingencies Disclosure [Abstract]  
Remainder of 2015 $ 57us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent
2016 79us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears
2017 69us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears
2018 58us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears
2019 11us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears
Total $ 274us-gaap_CapitalLeasesFutureMinimumPaymentsDue