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FINANCIAL INSTRUMENTS (Details 1) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Statement [Line Items]    
Long-term investments $ 3,304 $ 4,176
Amounts receivable 1,513 529
Accounts payable and accrued liabilities 3,079 2,068
Due to related parties 175 154
MXN [Member]    
Statement [Line Items]    
Cash 7,017 36,896
Long-term investments 0 0
Reclamation bonds 0 0
Amounts receivable 0 0
Accounts payable and accrued liabilities (11,775) (22,972)
Due to related parties 0 0
Finance lease obligations (582) (1,543)
Net exposure (5,340) 12,381
US dollar equivalent (262) 620
CDN [Member]    
Statement [Line Items]    
Cash 2,655 2,831
Long-term investments 4,210 5,317
Reclamation bonds 6 6
Amounts receivable 29 20
Accounts payable and accrued liabilities (302) (157)
Due to related parties (263) (196)
Finance lease obligations (385) (448)
Net exposure 5,951 7,373
US dollar equivalent $ 4,670 $ 5,791