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Note 15 – Common Stock (Details Narrative)
 6 Months Ended
Oct. 31, 2023
USD ($)
shares
Equity [Abstract]  
[custom:AggregateCommonStockSoldUnder2023ATMFacilityShares] | shares 53,235
[custom:AggregateCommonStockSoldUnder2023ATMFacilityProceeds] $ 57,000
[custom:AggregateCommonStockSoldUnder2023ATMFacilityProceedsNet] 55,700
[custom:LegalFeesATMFacilityEstablishment] 46,000
[custom:CommonStockAvailableForSaleUnder2023ATMFacilityValue] $ 16,943,000