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Trade and other receivables
 12 Months Ended
Dec. 31, 2021
Subclassifications of assets, liabilities and equities [abstract]  
Trade and other receivables Trade and other receivables:
 
As atDec 31
2021		Dec 31
2020
Trade$458,116$335,988
Value-added and other tax receivables11,95522,903
Other81,29653,109
$551,367$412,000