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FINANCIAL INSTRUMENTS (Details 1) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Statement [Line Items]    
Cash $ 11,713 $ 9,625
Long-term investments 4,176 4,311
Amounts receivable 529 1,477
Accounts payable and accrued liabilities 2,068 4,907
Due to related parties 154 156
MXN [Member]    
Statement [Line Items]    
Cash 36,896 2,780
Long-term investments 0 0
Reclamation bonds 0 0
Amounts receivable 0 0
Accounts payable and accrued liabilities (22,972) (51,307)
Due to related parties 0 0
Finance lease obligations (1,543) (1,037)
Net exposure 12,381 (49,564)
US dollar equivalent 620 (2,627)
CDN [Member]    
Statement [Line Items]    
Cash 2,831 5,902
Long-term investments 5,317 5,599
Reclamation bonds 6 6
Amounts receivable 20 54
Accounts payable and accrued liabilities (157) (442)
Due to related parties (196) (202)
Finance lease obligations (448) (522)
Net exposure 7,373 10,395
US dollar equivalent $ 5,791 $ 8,004