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Note 7 - Promissory Note (Details Textual) - Barrick [Member] - Notes Payable, Other Payables [Member]
$ in Thousands
6 Months Ended
May 31, 2022
USD ($)
Notes Payable, Total $ 118,919
Debt Instrument, Face Amount 51,576
Interest Payable $ 67,343
Percentage of Specified Revenue from Which the Promissory Note and Accrued Interest Are Payable 85.00%
Prime Rate [Member]  
Debt Instrument, Basis Spread on Variable Rate 2.00%