XML 142 R115.htm IDEA: XBRL DOCUMENT v3.21.1
Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax assets     $ 56,556 $ 39,739
Deferred tax liabilities     (76,055) (60,654)
Net deferred tax liabilities     (19,499) (20,915)
Net deferred tax liabilities $ (19,499) $ (20,915) (19,499) (20,915)
Reconciliation of changes in deferred tax liability (asset) [abstract]        
Beginning balance 20,915 31,444    
Deferred income tax (recovery) expense through income statement (1,416) (12,456)    
Deferred income tax expense through equity   1,927    
Ending balance $ 19,499 $ 20,915    
Reclamation and closure cost obligation [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax assets     13,080 9,530
Carried forward tax loss [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax assets     17,729 14,020
Accounts payable and accrued liability [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax assets     16,437 7,731
Deductibility of resource taxes [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax assets     3,414 3,140
Lease obligations [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax assets     5,769 5,317
Other deferred tax assets [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax assets     127 1
Mineral Properties [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax liabilities     (55,134) (44,825)
Mining and foreign withholding taxes [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax liabilities     (4,862) (5,281)
Equipment and Building [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax liabilities     (1,928) (3,621)
Convertible Debentures [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax liabilities     (1,544) (1,857)
Inflation [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax liabilities     (11,210) (4,939)
Other deferred tax liabilities [member]        
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]        
Deferred tax liabilities     $ (1,377) $ (131)