Annual report pursuant to Section 13 and 15(d)

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details)

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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
12 Months Ended
Apr. 30, 2023
Apr. 30, 2022
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]    
Deferred Tax Assets, Valuation Allowance $ 15,758,401 $ 16,498,199
[custom:DeferredTaxAssetsValuationAllowanceCharges] 0 0
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount 470,940 (739,798)
Deductions 0 0
Deferred Tax Assets, Valuation Allowance $ 16,229,341 $ 15,758,401