CARE AND MAINTENANCE - Disclosure of detailed information about care and maintenance (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Care And Maintenance [Line Items]    
Care and maintenance $ 1,356 $ 5,233
Depreciation and depletion [Member]    
Care And Maintenance [Line Items]    
Care and maintenance 55 214
Salaries, wages and benefits [Member]    
Care And Maintenance [Line Items]    
Care and maintenance 497 2,473
Direct general and administrative [Member]    
Care And Maintenance [Line Items]    
Care and maintenance $ 804 $ 2,546