Common Stock - Stock Repurchase and Issuance Activity (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Equity [Abstract]
Cumulative balance, shares, beginning balance	38,029	35,643	23,713
Repurchase of Class A Common Stock (in shares)		2,729	12,476
Issuance of Class A Common Stock (in shares)	(508)	(343)	(546)
Cumulative balance, shares, ending balance	37,521	38,029	35,643
Cumulative balance, weighted-average price per share, beginning balance	$ 17.04	$ 16.96	$ 16.40
Repurchase of Class A Common Stock, weighted-average price per share		$ 18.32	$ 18.11
Issuance of Class A Common Stock, weighted-average price per share	$ 17.24	$ 18.27	$ 19.01
Cumulative balance, weighted-average price per share, ending balance	$ 17.04	$ 17.04	$ 16.96
Cumulative balance, net amount, beginning balance	$ 648,066	$ 604,331	$ 388,817
Repurchase of Class A Common Stock	0	50,000	225,905
Issuance of Class A Common Stock, net amount repurchased	(8,766)	(6,265)	(10,391)
Cumulative balance, net amount, ending balance	$ 639,300	$ 648,066	$ 604,331