Related Parties (Detail) - USD ($) $ in Millions |
Mar. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|---|
| Related Party Transaction [Line Items] | |||
| Beneficial Ownership by Invus Partners LLC | 58.60% | 58.60% | |
| Invus Partners LLC | Affiliated Entity | |||
| Related Party Transaction [Line Items] | |||
| Due to Related Parties | $ 19.9 | $ 20.0 | $ 20.2 |
| Kunkemueller Enterprises LP | Affiliated Entity | |||
| Related Party Transaction [Line Items] | |||
| Due to Related Parties | $ 1.4 | $ 1.5 | $ 1.5 |