Stock-Based Compensation Expense - Weighted-Average Assumptions Used in Estimating Fair Values of Stock Options Granted (Detail)	3 Months Ended		9 Months Ended
	Oct. 04, 2015	Sep. 28, 2014	Oct. 04, 2015	Sep. 28, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Risk-free rate	2.10%	2.70%	2.10%	2.70%
Expected dividend yield	1.25%	0.00%	1.25%	0.00%
Expected volatility	40.00%	41.00%	40.00%	41.00%
Expected term (in years)	5 years 4 months 18 days	5 years 4 months 18 days	5 years 4 months 18 days	5 years 4 months 18 days