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NATURE OF OPERATIONS AND GOING CONCERN (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Nov. 30, 2019
Nov. 30, 2018
Aug. 31, 2019
Nature Of Operations And Going Concern [Line Items]      
Income (Loss) for the period $ 554 $ (5,640) $ (11,136)
Cash used in operating activities (1,052) $ (1,358)  
Working capital deficit $ 2,700    
Waterberg JV Co. [Member]      
Nature Of Operations And Going Concern [Line Items]      
Effective ownership proportion after combined ownership of Mnombo's ownership portion with Platinum Group Metals (RSA) (Pty) Ltd 63.05%    
Sprott Loan Facility [Member]      
Nature Of Operations And Going Concern [Line Items]      
Borrowings $ 20,000