Significant Components of Provision (Benefit) for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Current:
Federal	$ 27,903	$ 31,845	$ 20,989
State	6,009	5,809	5,505
Total current	33,912	37,654	26,494
Deferred:
Federal	2,279	(47)	3,938
State	(140)	(166)	534
Total deferred	2,139	(213)	4,472
Total income tax provision	$ 36,050	$ 37,441	$ 30,966