Intangible Assets, Net - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Finite Lived Intangible Assets [Line Items] | ||
| Gross intangible assets | $ 1,580 | $ 1,580 |
| Less: Accumulated amortization | (525) | (231) |
| Net intangible assets | 1,055 | 1,349 |
| Intermezzo Product Rights [Member] | ||
| Finite Lived Intangible Assets [Line Items] | ||
| Gross intangible assets | 1,410 | 1,410 |
| TO-2070 Asset [Member] | ||
| Finite Lived Intangible Assets [Line Items] | ||
| Gross intangible assets | $ 170 | $ 170 |