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Net Finance Expense
 12 Months Ended
Dec. 31, 2021
Disclosure Of Net Finance Income Expense Explanatory [Abstract]  
Net Finance Expenses
11.
NET FINANCE EXPENSE 
 
 
  
 
 
 
 
 
Year ended
 
December 31, 2021
 
 
 
 
 
 
  
 
 
 
 
 
Year ended
 
December 31, 2020
 
 
 
 
 
 
     
  Interest income
  
$
 202
 
   $  170  
     
  Accretion expense on decommissioning and restoration liability
  
 
(710
) 
     (1,052 ) 
     
  Interest expense
  
 
(32,476
) 
     (34,015 ) 
     
  Amortization of deferred financing costs
  
 
(5,910
) 
     (3,426 ) 
     
  Other finance costs*
  
 
(1,479
) 
     (1,674 ) 
     
 
  
$
(40,373
) 
   $ (39,997 )
*Included in other finance costs for the year ended December 31, 2021 is $59 (2020 - $90) related to interest on lease liabilities.