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Earnings Per Share
 6 Months Ended
Jun. 30, 2014
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share

Basic net income per share is calculated by dividing net income by the weighted average number of shares of common stock outstanding during the period.  Diluted net income per share assumes the conversion of all potentially dilutive securities and is calculated by dividing net income by the sum of the weighted average number of shares of common stock outstanding plus all potentially dilutive securities.  Dilutive common shares consist primarily of stock options and restricted stock awards.
 
 
Three months ended
 
Six months ended
 
June 30,
2014
 
June 30,
2013
 
June 30,
2014
 
June 30,
2013
 
(in thousands, except share and per share data)
Numerator:
 
 
 
 
 
 
 
Net income
$
11,363

 
$
12,119

 
$
21,185

 
$
19,259

Denominator:
 

 
 

 
 
 
 
Basic weighted average shares*
55,004,175

 
55,139,577

 
55,036,281

 
55,140,260

Effect of dilutive stock options and restricted stock*
564,037

 
585,816

 
567,698

 
444,042

Diluted weighted average shares*
55,568,212

 
55,725,393

 
55,603,979

 
55,584,302

Earnings per share:
 

 
 

 
 
 
 
Basic*
$
0.21

 
$
0.22

 
$
0.38

 
$
0.35

Diluted*
$
0.20

 
$
0.22

 
$
0.38

 
$
0.35

Anti-dilutive shares:
 

 
 

 
 
 
 
Shares*
18,445

 
11,250

 
19,448

 
11,250

 *Reflects three-for-two stock split effective July 16, 2014