Stock-Based Compensation Expense included in Operating Expenses (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 6,528	$ 6,178	$ 3,124
Advertising, promotional and selling expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	2,452	2,236	1,116
General and administrative expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	4,076	3,942	2,008	[1]
Performance-Based Options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 645	$ 973	$ (193)	[1]

[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.