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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2016
Earnings Per Share [Abstract]  
Computation of Earnings per Share
The computation of earnings per share, as adjusted for the Stock Split, is as follows:
 
Three Months Ended
 
March 31,
2016
 
March 31,
2015
 
(in thousands, except per share data)
Basic earnings per share:
 
 
 
Net income
$
27,658

 
$
23,696

Shares used in computation:
 
 
 
Weighted-average common shares outstanding
428,117

 
423,624

Basic earnings per share
$
0.06

 
$
0.06

 
 
 
 
Diluted earnings per share:
 
 
 
Net income
$
27,658

 
$
23,696

Shares used in computation:
 
 
 
Weighted-average common shares outstanding
428,117

 
423,624

Employee stock options
9,876

 
10,185

Weighted-average number of shares
437,993

 
433,809

Diluted earnings per share
$
0.06

 
$
0.05

Summary of Potential Common Shares Excluded from Diluted Calculation
The following table summarizes the potential common shares excluded from the diluted calculation, as adjusted for the Stock Split:
 
Three Months Ended
 
March 31,
2016
 
March 31,
2015
 
(in thousands)
Employee stock options
1,337

 
1,792