Weighted-Average Shares - Calculation of Weighted-Average Shares (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jul. 05, 2015	Jun. 29, 2014	Jul. 05, 2015	Jun. 29, 2014
Earnings Per Share [Abstract]
Basic weighted-average common shares outstanding	87,199	86,782	86,977	86,830
Effect of dilutive stock options	1,986	2,183	1,974	2,282
Weighted-average common and common-equivalent shares outstanding	89,185	88,965	88,951	89,112