Related Party Transaction (Details) (Immediate Family Member of Management or Principal Owner [Member], USD $)	3 Months Ended	6 Months Ended
Oct. 30, 2011	Oct. 31, 2010	Oct. 30, 2011	Oct. 31, 2010
Immediate Family Member of Management or Principal Owner [Member]
Related Party Transaction [Line Items]
Related party transaction expense	$ 47,102	$ 45,000	$ 130,302	$ 88,000
Restricted Stock Units granted to related party (in shares)	2,000
Fair value of Restricted Stock Units granted to related party	$ 29,300
Related party transaction, vesting rate of Restricted Stock Units	25.00%		25.00%

Expenses recognized during the period resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party during the period.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 57

-Paragraph 2

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Name:	us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration