Quarterly report pursuant to Section 13 or 15(d)

Acquisition and Disposition - Schedule of Discontinued Operation (Details)

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Acquisition and Disposition - Schedule of Discontinued Operation (Details) - USD ($)
3 Months Ended 6 Months Ended
Oct. 31, 2017
Oct. 31, 2016
Oct. 31, 2017
Oct. 31, 2016
Business Combinations [Abstract]        
Revenues $ 3,522,258   $ 7,885,310  
Cost of sales 3,239,915   6,653,363  
Gross profit 282,343   1,231,947  
Operating and other non-operating expenses (including impairment charge of 6,094,760) (385,219)   (7,406,271)  
Gain from extinguishment of liabilities 245,256   245,256
Gain from sale of discontinued operations 102,023 102,023
Gain Loss from discontinued operations $ 244,403 $ (5,827,045)