Commitments and Contingencies (Purchase Commitments) - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
May 04, 2013	Feb. 02, 2013
Contingencies And Commitments [Line Items]
Purchase commitments		$ 2.3
Contruction Materials For New Stores [Member]
Contingencies And Commitments [Line Items]
Purchase commitments	0.9	1.1
Distribution Center Infrastructure And Systems [Member]
Contingencies And Commitments [Line Items]
Purchase commitments		$ 1.2

The minimum amount the entity agreed to spend under the long-term purchase commitment.

No definition available.

Name:	us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration