Income Taxes (Detail) (USD $)	4 Months Ended		9 Months Ended
	Oct. 06, 2012	Oct. 08, 2011	Oct. 06, 2012	Oct. 08, 2011	Jun. 16, 2012 Impairment of Goodwill [Member]
Income Tax Expense (Benefit)	$ 8,351,000	$ 6,644,000	$ (16,366,000)	$ 18,096,000
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	(100,000)
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	400,000		400,000		14,400,000
Effective Income Tax Rate, Continuing Operations	36.40%	39.70%	20.10%	39.60%
Unrecognized Tax Benefits	2,200,000		2,200,000
Income Tax Examination, Penalties and Interest Accrued	$ 100,000		$ 100,000