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Earnings per Share (Tables)
9 Months Ended
Sep. 30, 2014
Earnings Per Share [Abstract]  
Reconciliation of Income and Share Data Used in Basic and Diluted Earnings Per Share Computations
The following is a reconciliation of the income and share data used in the basic and diluted earnings per share computations for the three and nine months ended September 30, 2014 and 2013:
 
Three months ended
 September 30,
 
Nine months ended
 September 30,
 
2014
 
2013
 
2014
 
2013
Net earnings attributable to WEX Inc. available for common stockholders – Basic and Diluted
$
74,443

 
$
43,838

 
$
154,318

 
$
114,740

Weighted average common shares outstanding – Basic
38,867

 
38,978

 
38,896

 
38,934

Unvested restricted stock units
74

 
74

 
85

 
125

Stock options
20

 
29

 
23

 
43

Weighted average common shares outstanding – Diluted
38,961

 
39,081

 
39,004

 
39,102