Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2017

Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income per Common Share



(Weighted-average shares)	2017	2016	2015
Basic method	172,524,061	172,173,012	174,351,227
Dilutive stock options 1	–	–	–
Diluted method	172,524,061	172,173,012	174,351,227

1 Due to a net loss recognized by the Company for the years ended December 31, 2017, 2016 and 2015, no unvested stock awards were included in the computation of diluted earnings per share because the effect would have been antidilutive.

Anti Dilutive Securities Not Included in Computation of Diluted EPS



	2017	2016	2015
Antidilutive stock options excluded from diluted shares	4,901,269	5,757,435	5,443,288
Weighted average price of these options	$45.74	$48.46	$52.93