Acquired Intangible Assets - Additional Information (Detail) |
3 Months Ended |
|---|---|
Dec. 26, 2015 | |
| Minimum | |
| Acquired Finite-Lived Intangible Assets [Line Items] | |
| Amortized acquired intangible assets with definite lives useful period (in years) | 3 years |
| Maximum | |
| Acquired Finite-Lived Intangible Assets [Line Items] | |
| Amortized acquired intangible assets with definite lives useful period (in years) | 7 years |