| Property and Equipment, Net - Summary of Estimated Useful Lives of Property and Equipment (Detail) | 9 Months Ended | 0 Months Ended | 9 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep. 27, 2014 | Apr. 17, 2013
 Facility subject to capital lease | Sep. 27, 2014
 Machinery and equipment
 Minimum | Sep. 27, 2014
 Machinery and equipment
 Maximum | Sep. 27, 2014
 Computer software (purchased and developed)
 Minimum | Sep. 27, 2014
 Computer software (purchased and developed)
 Maximum | Sep. 27, 2014
 Computer equipment
 Minimum | Sep. 27, 2014
 Computer equipment
 Maximum | Sep. 27, 2014
 Vehicles
 Minimum | Sep. 27, 2014
 Vehicles
 Maximum | Sep. 27, 2014
 Leasehold improvements
 Minimum | Sep. 27, 2014
 Leasehold improvements
 Maximum | Sep. 27, 2014
 Furniture and fixtures
 Minimum | Sep. 27, 2014
 Furniture and fixtures
 Maximum | |||||
| Property, Plant and Equipment [Line Items] | ||||||||||||||||||
| Estimated useful life of property and equipment | 20 years | 20 years | 2 years | 5 years | 2 years | 3 years | 2 years | 5 years | 3 years | 5 years | 3 years | [1] | 5 years | [1] | 3 years | 7 years | ||
| 
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