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Other assets (Tables)
 12 Months Ended
Dec. 31, 2019
Miscellaneous non-current assets [abstract]  
Summary of Other Assets
 
December 31, 2019

 
December 31, 2018

 
 
 
 
Long-term value added tax and other taxes recoverable
$
13,749

 
$
6,668

Prepaid forestry fees
3,222

 
3,175

Prepaid loan costs (note 16(b))
2,865

 
749

Other assets
3,107

 
—

 
$
22,943

 
$
10,592