Earnings per Share of Common Stock

9 Months Ended

Sep. 30, 2017

6.	Earnings per Share of Common Stock

The numerator for the calculation of basic and diluted earnings per share is net earnings. The following table sets forth the computation of basic and diluted weighted-average shares used in the earnings per share calculations:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Denominator for basic earnings per share – weighted average shares		172,446,529		174,409,789		172,936,255		175,019,605
Effect of dilutive stock options and share units		1,909,214		2,138,589		1,948,557		2,097,444

Denominator for diluted earnings per share		174,355,743		176,548,378		174,884,812		177,117,049