Annual report pursuant to Section 13 and 15(d)

Acquisition and Disposition - Schedule of Discontinued Operation (Details)

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Acquisition and Disposition - Schedule of Discontinued Operation (Details) - USD ($)
12 Months Ended
Apr. 30, 2018
Apr. 30, 2017
Business Combinations [Abstract]    
Revenues $ 7,885,310  
Cost of sales 6,653,363  
Gross profit 1,231,947  
Operating and other non-operating expenses (including impairment charge of 6,094,760) (7,406,271)  
Gain from extinguishment of liabilities 248,684
Loss from discontinued operations (5,925,640)  
Gain from sale of discontinued operations 94,485
Total loss from discontinued operations $ (5,831,155)