XML 112 R65.htm IDEA: XBRL DOCUMENT v3.21.1
Production costs (Tables)
12 Months Ended
Dec. 31, 2020
Expenses by nature [abstract]  
Summary of Product Cost
December 31, 2020December 31, 2019
Labour$116,653 $100,908 
Fuel16,464 12,931 
Reagents53,399 29,871 
Electricity17,904 16,330 
Mining contractors38,240 30,162 
Operating and maintenance supplies and services78,062 63,097 
Site general and administrative costs46,588 42,919 
Royalties, production taxes and selling expenses77,873 38,621 
$445,183 $334,839