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OTHER INCOME (Details)
12 Months Ended
Apr. 30, 2023
USD ($)
a
Apr. 30, 2022
USD ($)
Other income $ 1,803,000 $ 261,000
Life insurance policy for a retired executive    
Other income   30,000
Minerals and mineral rights    
Other operating income $ 1,803,000  
Surface acres of land held | a 147  
Bankruptcy of a warranty provider    
Other income   185,000
Forgiveness of debt    
Other income   $ 45,000