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Net income (loss) per common share (Tables)
12 Months Ended
Dec. 31, 2020
Earnings per share [abstract]  
Earnings per share reconciliation
A reconciliation of the numerator used for the purposes of calculating diluted net income (loss) per common share is as follows:
For the years ended December 31
20202019
Numerator for basic net income (loss) per common share
(156,678)$87,767 
Adjustment for the effect of TSARs:
Cash-settled recovery included in net income
 (5,433)
Equity-settled expense
 (4,807)
Numerator for diluted net income (loss) per common share
(156,678)$77,527 
A reconciliation of the denominator used for the purposes of calculating basic and diluted net income (loss) per common share is as follows:
For the years ended December 31
20202019
Denominator for basic net income (loss) per common share
76,196,395 76,592,413 
Effect of dilutive stock options
 17,325 
Effect of dilutive TSARS
 82,756 
Denominator for diluted net income (loss) per common share
76,196,395 76,692,494 
For the years ended December 31, 2020 and 2019, basic and diluted net income (loss) per common share attributable to Methanex shareholders were as follows:
For the years ended December 31
20202019
Basic net income (loss) per common share
$(2.06)$1.15 
Diluted net income (loss) per common share
$(2.06)$1.01