Equity - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010	Jul. 25, 2012	Aug. 16, 2011
Equity [Line Items]
Shares authorized for repurchase				2,000,000	1,000,000
Remaining shares available for repurchase under July 25, 2012 authorization	1,991,877
Total cost of repurchase of common stock	$ 25,826	$ 50,450	$ 102,736
Preferred Stock, shares issued	0
Preferred stock, shares authorized and unissued	2,000,000
Treasury Stock
Equity [Line Items]
Common stock repurchased during period, shares	524,674	1,206,111	2,652,791