Earnings per share attributable to stockholders (Tables)

3 Months Ended

Mar. 31, 2022

Earnings per share attributable to stockholders

Computation of Basic and Diluted Earnings Per Share

	Net income		WA	Per
	attributable to		number	share
Three months ended March 31, 2022	stockholders		of shares	amount
Basic	$	178,094	110,647,700	$	1.61
Effect of dilutive securities:
Share units		—	450,259		—
Stock options		—	557,902		(0.01)
Diluted	$	178,094	111,655,861	$	1.60

	Net income		WA	Per
	attributable to		number	share
Three months ended March 31, 2021	stockholders		of shares	amount
Basic	$	28,188	109,972,997	$	0.26
Effect of dilutive securities:
Share units		—	579,133		—
Stock options		—	715,262		(0.01)
Diluted	$	28,188	111,267,392	$	0.25