Income Taxes (Details) (USD $) In Millions, unless otherwise specified	May 04, 2013
Possible Change in Unrecognized Tax Benefits Liability [Line Items]
Possible Change in Unrecognized Tax Benefits Liability, Estimated Range of Change, Lower Bound	$ 0.7
Possible Change in Unrecognized Tax Benefits Liability, Estimated Range of Change, Upper Bound	$ 0.8

The estimated lower bound of the reasonably possible change in the total amount of the unrecognized tax benefit (that will significantly increase or decrease within twelve months of the balance sheet date) for a tax position taken.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Name:	us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant