Components of Income Tax Expense (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Components Of Income Tax Expense Benefit [Line Items]
Current Taxes: Federal	$ 54,599	$ 60,129	$ 60,472
Current Taxes: State	6,602	10,109	8,973
Current Taxes: Total	61,201	70,238	69,445
Deferred Taxes: Federal	9,703	(1,492)	4,372
Deferred Taxes: State	1,747	(208)	(484)
Deferred Income Taxes, Total	11,450	(1,700)	3,888
Income tax expense	$ 72,651	$ 68,538	$ 73,333