Commitments and Contingencies - Schedule of Future Minimum Lease Payments Under Operating Leases (Detail) $ in Thousands |
Sep. 30, 2016
USD ($)
|
|---|---|
| Commitments And Contingencies Disclosure [Abstract] | |
| Remainder of 2016 | $ 178 |
| 2017 | 824 |
| 2018 | 835 |
| 2019 | 826 |
| 2020 | 841 |
| 2021 | 594 |
| Total | $ 4,098 |