Enterprise Resource Management System Recoverability (Details) (Software [Member], USD $)	9 Months Ended	12 Months Ended
Jan. 31, 2013	Apr. 30, 2012
Software [Member]
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Impaired Assets to be Disposed of by Method Other than Sale, Partial Refund		$ 40,000
Impaired Assets to be Disposed of by Method Other than Sale, Amount of Impairment Loss	$ 0

Loss recognized as a result of the initial and subsequent write-down of a long-lived asset's carrying amount to fair value.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 27, 26

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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