Earnings per share attributable to stockholders (Tables)

3 Months Ended

Mar. 31, 2020

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, 2020	stockholders		of shares	amount
Basic	$	22,809	109,248,880	$	0.21
Effect of dilutive securities:
Share units		—	586,074		—
Stock options		—	647,883		—
Diluted	$	22,809	110,482,837	$	0.21

	Net income		WA	Per
	attributable to		number	share
Three months ended March 31, 2019	stockholders		of shares	amount
Basic	$	18,164	108,765,489	$	0.17
Effect of dilutive securities:
Share units		—	486,626		—
Stock options		—	792,098		—
Diluted	$	18,164	110,044,213	$	0.17