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Consolidated Balance Sheets (Parenthetical) - $ / shares
Jul. 31, 2023
Apr. 30, 2023
Statement of Financial Position [Abstract]    
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 5,000,000 5,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 58,776,654 56,304,642
Common stock, shares outstanding 58,731,974 56,263,728
Treasury stock, shares 44,680 40,914