Long-Term Debt - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended				6 Months Ended			12 Months Ended	6 Months Ended	3 Months Ended			3 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012	Feb. 02, 2013 Term Loan	Aug. 03, 2013 Term Loan	Jul. 28, 2012 Term Loan	Aug. 03, 2013 Term Loan Interest Rate Floor	Aug. 03, 2013 Term Loan Base Rate	Aug. 03, 2013 Term Loan Adjusted London Interbank Offered Rate	Aug. 03, 2013 Term Loan Bank Term Loan	Feb. 02, 2013 Term Loan Voluntary Prepayment	Aug. 03, 2013 Term Loan Maximum	Feb. 02, 2013 Notes	Aug. 03, 2013 Notes	Jul. 28, 2012 Notes	Feb. 02, 2013 Notes Change in Control of Company	Feb. 02, 2013 Notes Minimum
Debt Instrument [Line Items]
Long-term debt instrument, amount						$ 820,000,000								$ 400,000,000
Long-term debt instrument, due date						2018-02								2018-12
Long-term debt, allowed additional tranches of loan													200,000,000
Interest rate under term loan									2.50%	3.50%	5.00%
London interbank offering rate floor								1.50%
Long-term debt, payment percentage						0.25%
Long-term debt, voluntary prepaid with a certain percentage of excess cash flow					15,600,000							25,000,000
Payments on Term Loan				17,698,000	2,100,000
Senior secured term loan facility, discount					1,647,000	1,507,000	1,791,000
Long-term debt, interest rate														9.125%	9.125%	9.125%
Long-term debt, redemption price														100.00%			101.00%
Long-term debt, redemption date																		Dec. 01, 2014
Aggregate principal amount of Notes repurchased														29,000,000
Payments on Notes														26,600,000
Gain on extinguishment of debt														2,400,000
Long-term debt, loss on extinguishment of debt, write-off of deferred financing costs														1,400,000
Long-term debt, Interest expense	20,467,000	21,193,000	40,869,000	42,851,000
Long-term debt interest expense, amortization of deferred financing costs and accretion of OID	$ 1,700,000	$ 1,700,000	$ 3,362,000	$ 3,471,000