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STOCKHOLDERS' EQUITY (Details) - shares
Oct. 31, 2018
Apr. 30, 2018
Oct. 31, 2017
Increase (Decrease) in Stockholders' Equity      
Balance beginning of year (in shares) 5,995,750 5,995,750 5,995,750
Balance end of year (in shares) 5,995,750 5,995,750 5,995,750