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NET INCOME PER COMMON SHARE
 6 Months Ended
Jun. 30, 2014
Earnings Per Share [Abstract]  
NET INCOME PER COMMON SHARE
NET INCOME PER COMMON SHARE
 
The following table sets forth the computation of basic and diluted net income per common share for the periods indicated (in thousands, except per share data): 
 
Three Months
Ended June 30,
 
Six Months
Ended June 30,
 
2014
 
2013
 
2014
 
2013
Net income
$
17,666

 
$
11,875

 
$
72,129

 
$
38,158

 
 
 
 
 
 
 
 
Weighted-average common shares outstanding - basic
65,820

 
75,531

 
66,450

 
75,590

Dilutive effect of employee stock-based awards
1,382

 
1,882

 
1,510

 
1,900

Number of shares used to compute net income per common
   share - diluted
67,202

 
77,413

 
67,960

 
77,490

 
 
 
 
 
 
 
 
Net income per common share:
 

 
 

 
 
 
 
Basic
$
0.27

 
$
0.16

 
$
1.09

 
$
0.50

Diluted
$
0.26

 
$
0.15

 
$
1.06

 
$
0.49


Employee stock-based awards totaling 55,000 shares during the three-month period ended June 30, 2013 were excluded from the computation of diluted net income per common share because their effect would have been anti-dilutive under the treasury stock method. For the six-month periods ended June 30, 2014 and 2013, the number of anti-dilutive shares excluded from the diluted net income per common share computation was 3,000 and 32,000, respectively.