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Earnings Per Share
6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share
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. The following table sets forth the computation of basic and diluted earnings per share (shares in thousands): 
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2017
 
2016
 
2017
 
2016
Numerator:
 
 
 
 
 
 
 
Net income available to common stockholders
$
141

 
$
134

 
250

 
226

Denominator:
 
 
 
 
 
 
 
Denominator for basic earnings per share—weighted-average common shares
84,635

 
88,095

 
84,546

 
89,303

Effect of dilutive securities:
 
 
 
 
 
 
 
Employee stock options
394

 
271

 
403

 
267

Restricted stock units
379

 
107

 
452

 
139

Denominator for diluted earnings per share—adjusted weighted-average common shares
85,408

 
88,473

 
85,401

 
89,709

Basic earnings per share
$
1.67

 
$
1.52

 
$
2.95

 
$
2.53

Diluted earnings per share
$
1.65

 
$
1.52

 
$
2.92

 
$
2.52