Commitment - Additional Information (Detail) |
9 Months Ended | ||
|---|---|---|---|
Oct. 27, 2015 |
Oct. 26, 2015 |
Sep. 30, 2015 |
|
| Commitment And Contingencies [Line Items] | |||
| Lease amendment date | Oct. 27, 2015 | ||
| Subsequent Event [Member] | |||
| Commitment And Contingencies [Line Items] | |||
| Lease termination date | Dec. 31, 2020 | Dec. 31, 2016 |