Earnings per share attributable to stockholders

6 Months Ended

Jun. 30, 2021

Earnings per share attributable to stockholders

Earnings per share attributable to stockholders

10.    Earnings per share attributable to stockholders

Basic earnings per share (“EPS”) attributable to stockholders was calculated by dividing the net income attributable to stockholders by the weighted average (“WA”) number of common shares outstanding during the period. Diluted EPS attributable to stockholders was calculated by dividing the net income attributable to stockholders by the weighted average number of shares of common stock outstanding if the potentially dilutive securities had been issued. Potentially dilutive securities include unvested PSUs, unvested RSUs, and outstanding stock options. The dilutive effect of potentially dilutive securities is reflected in diluted EPS by application of the treasury stock method. Under the treasury stock method, an increase in the fair market value of the Company’s common stock can result in a greater dilutive effect from potentially dilutive securities.

	Three months ended					Six months ended
	June 30, 2021					June 30, 2021
	Net income		WA	Per		Net income		WA	Per
	attributable to		number	share		attributable to		number	share
	stockholders		of shares	amount		stockholders		of shares	amount
Basic	$	60,749	110,311,615	$	0.55	$	88,937	110,144,229	$	0.81
Effect of dilutive securities:
Share units		—	322,371		—		—	450,752
Stock options		—	700,198		—		—	707,730		(0.01)
Diluted	$	60,749	111,334,184	$	0.55	$	88,937	111,302,711	$	0.80

	Three months ended					Six months ended
	June 30, 2020					June 30, 2020
	Net income		WA	Per		Net income		WA	Per
	attributable to		number	share		attributable to		number	share
	stockholders		of shares	amount		stockholders		of shares	amount
Basic	$	53,043	108,387,490	$	0.49	$	75,851	108,818,903	$	0.70
Effect of dilutive securities:
Share units		—	424,812		—		—	505,443		—
Stock options		—	511,041		—		—	579,462		(0.01)
Diluted	$	53,043	109,323,343	$	0.49	$	75,851	109,903,808	$	0.69