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FINANCIAL INSTRUMENTS (Details 1) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Statement [Line Items]      
Cash $ 168 $ 24,765 $ 11,713
Long-term Investments 3,332 3,939  
Amounts Receivable 2,602 1,208  
Accounts Payable And Accrued Liabilities 4,609 3,260  
Amounts Due To Related Parties 151 163  
MXN [Member]      
Statement [Line Items]      
Cash 3,096 3,576  
Long-term Investments 0 0  
Reclamation Bonds 0 0  
Amounts Receivable 499 0  
Accounts Payable And Accrued Liabilities (12,574) (57,604)  
Amounts Due To Related Parties 0 0  
Finance Lease Obligations (2,766) (1)  
Net Exposure (11,745) (54,029)  
Us Dollar Equivalent (587) (2,363)  
CDN [Member]      
Statement [Line Items]      
Cash 1,039 1,450  
Long-term Investments 4,164 4,976  
Reclamation Bonds 6 6  
Amounts Receivable 31 33  
Accounts Payable And Accrued Liabilities (464) (211)  
Amounts Due To Related Parties (188) (206)  
Finance Lease Obligations (342) (394)  
Net Exposure 4,246 5,654  
Us Dollar Equivalent $ 3,398 $ 4,054