Equity-Based Compensation - Summary of Equity-Based Compensation Expense related to Non-Vested RSUs (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 28, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 3,278
Service-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	1,439
Weighted average period	1 year 2 months 12 days
Performance-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	1,064
Weighted average period	1 year 4 months 24 days
Market-Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 775
Weighted average period	1 year 3 months 18 days