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Net Income Per Share (Tables)
9 Months Ended
Sep. 30, 2015
Earnings Per Share [Abstract]  
Reconciliation of Common Shares Used for Basic and Diluted Earnings Per Share
The following table provides a reconciliation of the common shares used for basic net income per share to the diluted shares used for diluted net income per share:
 
Three Months Ended September 30,
 
 
Nine Months Ended September 30,
 
2015
 
2014
 
 
2015
 
2014
Basic weighted average shares outstanding
45,174,521

 
45,115,882

 
 
45,173,671

 
45,083,831

Effect of potential dilutive shares:
 
 
 
 
 
 
 
 
Warrants

 
1,469,203

 
 
1,154,313

 
1,892,211

Stock options

 
8,220

 
 
7,083

 
10,569

Restricted stock units

 
31,384

 
 
14,418

 
40,473

Performance stock units

 

 
 
2,729

 

Diluted weighted average shares outstanding
45,174,521

 
46,624,689

 
 
46,352,214

 
47,027,084