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Amounts Recognized in Financial Statements with Respect to Plans (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]
Total cost of the Plans during the period	$ 6,149	$ 5,012	$ 4,769
Amount of related income tax benefit recognized during the period	2,398	983	1,194
Net cost of the Plans during the period	$ 3,751	$ 4,029	$ 3,575

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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