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Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

v3.20.2
CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
Apr. 30, 2020
Apr. 30, 2019
Assets Ìý Ìý
Allowance for doubtful accounts $ 1,758,920 $ 1,247,031
Accounts receivable, allowance for credit loss, noncurrent 625,963 625,963
Debt instrument, unamortized discount $ 1,550,854 $ 353,328
Stockholders' Equity: Ìý Ìý
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, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.001 Ìý
Common stock, shares authorized (in shares) 40,000,000 Ìý
Common stock, shares issued (in shares) 21,770,520 18,665,551
Common stock, shares outstanding (in shares) 21,753,853 18,648,884
Treasury stock, shares 16,667 16,667