Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Goodwill (Details)

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Summary of Significant Accounting Policies - Goodwill (Details) - USD ($)
12 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Summary Of Significant Accounting Policies - Liquidity And Basis Of Presentation Details Narrative    
Opening balance May 1 $ 1,083,000 $ 1,083,000
Contingently purchase price    
Impairment charge    
Goodwill balance April 30 $ 1,083,000 $ 1,083,000