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Income Taxes (Schedule of Tax Losses Expiry Dates) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Income Taxes [line items]    
Unused tax losses for which no deferred tax asset recognised $ 136,072 $ 90,192
CANADA    
Income Taxes [line items]    
Unused tax losses for which no deferred tax asset recognised $ 150,015 $ 90,300
CANADA | Bottom of range [member]    
Income Taxes [line items]    
Year of Expiry 2026 2026
CANADA | Top of range [member]    
Income Taxes [line items]    
Year of Expiry 2041 2039
ARGENTINA    
Income Taxes [line items]    
Unused tax losses for which no deferred tax asset recognised   $ 68,900
ARGENTINA | Bottom of range [member]    
Income Taxes [line items]    
Year of Expiry   2020
ARGENTINA | Top of range [member]    
Income Taxes [line items]    
Year of Expiry   2024
MEXICO    
Income Taxes [line items]    
Year of Expiry   2029
Unused tax losses for which no deferred tax asset recognised $ 378 $ 367
MEXICO | Bottom of range [member]    
Income Taxes [line items]    
Year of Expiry 2021 2021
MEXICO | Top of range [member]    
Income Taxes [line items]    
Year of Expiry 2030