Earnings Per Share Attributable to Stockholders (Tables)

12 Months Ended

Dec. 31, 2022

Earnings Per Share Attributable to Stockholders

Computation of Basic and Diluted Earnings Per Share

	Net income		WA	Per
	attributable to		number	share
Year ended December 31, 2022	stockholders		of shares	amount
Basic	$	319,657	110,781,282	$	2.89
Effect of dilutive securities:
Share units		—	516,144		(0.01)
Stock options		—	588,599		(0.02)
Diluted	$	319,657	111,886,025	$	2.86

	Net income		WA	Per
	attributable to		number	share
Year ended December 31, 2021	stockholders		of shares	amount
Basic	$	151,868	110,315,782	$	1.38
Effect of dilutive securities:
Share units		—	388,083		(0.01)
Stock options		—	702,965		(0.01)
Diluted	$	151,868	111,406,830	$	1.36

	Net income		WA
	attributable to		number	Per share
Year ended December 31, 2020	stockholders		of shares	amount
Basic	$	170,095	109,054,493	$	1.56
Effect of dilutive securities:
Share units		—	541,054		(0.01)
Stock options		—	715,437		(0.01)
Diluted	$	170,095	110,310,984	$	1.54