Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
Jan. 31, 2017
Apr. 30, 2016
Assets    
Allowance for doubtful accounts, current accounts receivables $ 369,947 $ 449,946
Allowance for doubtful accounts, noncurrent accounts receivables 625,963 625,963
Debt discount $ 96,875 $ 0
Stockholders' Equity:    
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 250,000,000 250,000,000
Common stock, shares issued 11,502,894 11,513,179
Common stock, shares outstanding 11,484,012 11,246,512
Treasury stock, shares 16,667 16,667