Share-Based Plans - Board of Directors (Details) (Restricted Stock [Member], USD $)	3 Months Ended
Jul. 30, 2011	Apr. 30, 2011
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vested in Period	(21,784)	(250,000)
Nonemployee Board of Directors [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vested in Period	21,784
Deferred Compensation Arrangement, Fair Value of Shares Issued to Each Board Member	$ 95,000

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(2)(d)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix:	us-gaap
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration