Commitments and Contingencies - Additional Information (Detail) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Loss Contingencies [Line Items] | ||
| Commitments to purchase inventory | $ 2,800,000 | |
| Purchase commitments inventory expire year | 2017 | |
| Assets Held under Capital Leases [Member] | ||
| Loss Contingencies [Line Items] | ||
| Assets held under capital leases | $ 0 | $ 0 |