Components of Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Income Tax Disclosure [Abstract]
Current Taxes: Federal	$ 75,128	$ 72,780	$ 73,669
Current Taxes: State	10,419	10,294	11,325
Current Taxes: Total	85,547	83,074	84,994
Deferred Taxes: Federal	16,236	7,691	7,970
Deferred Taxes: State	2,057	1,550	(1,485)
Deferred Income Taxes, Total	18,293	9,241	6,485
Income tax expense	$ 103,840	$ 92,315	$ 91,479