Earnings Per Share (Notes)

9 Months Ended

Sep. 30, 2019

11. Earnings Per Share

Basic earnings per common share (EPS) excludes dilution and is computed by dividing Net income attributable to common stockholders by the weighted average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other obligations to issue common stock were exercised or converted into common stock or resulted in the issuance of common shares that then shared in our earnings.

A reconciliation of the numerators and denominators of the basic and diluted EPS computations is presented below:



	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
	(In thousands, except per share amounts)
Amounts attributable to common stockholders:
Net income:
Net income — basic	$	70,792	$	68,935	$	222,444	$	254,162
After tax interest on convertible debt	—		15		—		45
Net income — diluted	$	70,792	$	68,950	$	222,444	$	254,207
Weighted average shares (denominator):
Weighted average shares — basic	182,551		180,858		182,218		182,859
Stock options	3,225		4,284		3,370		4,364
Restricted stock units	67		197		47		173
Convertible debt	—		121		—		121
Weighted average shares — diluted	185,843		185,460		185,635		187,517
Net income per share:
Basic	$	0.39	$	0.38	$	1.22	$	1.39
Diluted	$	0.38	$	0.37	$	1.20	$	1.36

The computation of diluted EPS excludes outstanding stock options and restricted share units in certain periods in which the inclusion of such equity awards would be anti-dilutive in the periods presented. Total equity awards not included in the computation of dilutive EPS are as follows (in shares):



	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2019	2018	2019	2018
	(In thousands)
Antidilutive options	785	831	641	980
Antidilutive restricted stock units	—	—	58	—