Income Taxes (Details) (USD $)	3 Months Ended
	Apr. 28, 2012	Jan. 28, 2012
Income Tax Disclosure [Abstract]
Income taxes receivable, net	$ (1,227,000)	$ 10,048,000
Net Federal tax refunds during the period	10,743,000
Gross unrecognized tax benefits	33,797,000
Gross unrecognized tax benefits that would impact financial statements if recognized	22,101,000
Accrued interest and penalties	16,968,000
Increase (decrease) in unrecognized tax benefits, period	4,473,000
Increase/(decrease) during the period in gross unrecognized tax benefits that would impact financial statements if recognized	2,921,000
Increase/(decrease) during the period in accrued interest and penalties	928,000
Estimated decrease in unrecognized tax benefits within the next twelve months	$ (10,616,000)