Earnings Per Share

3 Months Ended

Mar. 31, 2018

Basic earnings per share is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding. Diluted earnings per share is computed by dividing net income available to common stockholders by the weighted-average number of common shares plus the effect of dilutive potential common shares outstanding during the period. Net income and earnings per share for 2018 reflect lower effective tax rates due to the enactment of the Tax Act in December 2017, as discussed further below (see "Management’s Discussion and Analysis of Financial Condition and Results of Operations-Results of Operations-Other costs/(income)"). The following table sets forth the computation of basic and diluted earnings per share (shares in thousands):



	Three Months Ended
	March 31,
	2018		2017
Numerator:
Net income available to common stockholders	183		109
Denominator:
Denominator for basic earnings per share—weighted-average common shares	84,256		84,456
Effect of dilutive securities:
Employee stock options	417		414
Restricted stock units	565		507
Denominator for diluted earnings per share—adjusted weighted-average common shares	85,238		85,377
Basic earnings per share	$	2.18	$	1.29
Diluted earnings per share	$	2.15	$	1.27