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Note 8 - Equity-accounted Investments - Equity-accounted Investment (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Apr. 30, 2023
Apr. 30, 2023
Apr. 30, 2022
Balance     $ 24,177    
Balance $ 45,886   45,886 $ 45,886  
Total (900) $ 1,959 (985)   $ 4,714
Uranium Royalty Corp and JCU (Canada) Exploration Company Limited [Member]          
Balance       24,177  
Share of losses (908) 801 (1,609) (1,609) 983
Gain on dilution of ownership interest in URC 8 1,158 624   3,731
Foreign exchange difference       (2,403)  
Balance 45,886   45,886 45,886  
Total $ (900) $ 1,959 $ (985)   $ 4,714
UEX Acquisition [Member]          
Addition from UEX Acquisition - JCU       24,502  
JCU (Canada) Exploration Company Limited [Member]          
Capital contribution to JCU       595  
Uranium Royalty Corp [Member]          
Gain on dilution of ownership interest in URC       $ 624