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FINANCIAL INSTRUMENTS - RISK MANAGEMENT - Currency risk (Details) - USD ($)
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
FINANCIAL INSTRUMENTS - RISK MANAGEMENT      
Risk exposure associated with instruments sharing characteristic $ (50,608,592) $ (52,968,976) $ (40,513,954)
Currency Risk | Amount expressed in USD      
FINANCIAL INSTRUMENTS - RISK MANAGEMENT      
Estimate of devaluation of Argentine peso (as a percent) 20.00%    
Result in pre-tax gain $ 9,900,000