Inventories (Detail) - USD ($) $ in Thousands |
Mar. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|---|
| Inventory Disclosure [Abstract] | |||
| Finished goods | $ 71,499 | $ 76,987 | $ 83,904 |
| Work in process | 455 | 352 | 90 |
| Raw materials | 2,654 | 2,583 | 3,136 |
| Packaging and supplies | 1,608 | 3,560 | 1,490 |
| Total | $ 76,216 | $ 83,482 | $ 88,620 |