Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
Jan. 31, 2021
Apr. 30, 2020
Assets    
Accounts receivable, allowance $ 2,924,887 $ 1,758,920
Accounts receivable, secured, allowance 625,963 625,963
Discount on debt instrument $ 0 $ 1,550,854
Stockholders' Equity:    
Preferred stock par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 1,000,000 1,000,000
Preferred stock issued (in shares) 0 0
Preferred stock outstanding (in shares) 0 0
Common stock par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 40,000,000 40,000,000
Common stock issued (in shares) 24,939,673 21,770,520
Common stock outstanding (in shares) 24,784,187 21,753,853
Treasury stock (in shares) 155,486 16,667