Earnings Per Share - Computation of Basic EPS and Diluted EPS (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Earnings Per Share [Abstract]
Net income	$ 24,833	$ 49,759
Weighted average shares	154,771	151,084
Basic EPS (in dollars per share)	$ 0.16	$ 0.33
Weighted average shares, including the dilutive effect of stock-based awards (4,229 and 3,473 for the thirteen weeks ended March 29, 2014 and March 30, 2013, respectively)	159,000	154,557
Diluted EPS (in dollars per share)	$ 0.16	$ 0.32