Stock-Based Compensation Expense included in Operating Expenses (Detail) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010		Dec. 26, 2009
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 6,178,000	$ 3,124,000		$ 4,106,000
Advertising, promotional and selling expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	2,236,000	1,116,000		1,010,000
General and administrative expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	3,942,000	2,008,000	[1]	3,096,000
Performance-Based Options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 973,000	$ (193,000)	[1]	$ 1,245,000

[1] Net of a reversal of approximately $872,000 of expense related to a performance-based option to purchase 120,000 shares granted to the Chief Executive Officer in 2005.