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EARNINGS PER SHARE (Tables)
 9 Months Ended
Sep. 30, 2015
Earnings Per Share [Abstract]  
Earnings per share calculation
A summary of the earnings per share calculation is as follows:        
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
(In thousands, except per share amounts)
2015
 
2014
 
2015
 
2014
Basic earnings per share:
 
 
 
 
 
 
 
Net income
$
11,513

 
$
16,111

 
$
26,446

 
$
45,190

Weighted-average common shares
28,855

 
30,013

 
29,175

 
30,186

Basic earnings per share
$
0.40

 
$
0.54

 
$
0.91

 
$
1.50

Diluted earnings per share: (1)
 
 
 
 
 
 
 
Net income
$
11,513

 
$
16,111

 
$
26,446

 
$
45,190

Weighted-average common shares
28,855

 
30,013

 
29,175

 
30,186

Effect of dilutive awards:
 
 
 
 
 
 
 
Employee stock plans
443

 
744

 
681

 
867

Diluted weighted-average common shares
29,298

 
30,757

 
29,856

 
31,053

Diluted earnings per share
$
0.39

 
$
0.52

 
$
0.89

 
$
1.46

_______________ 
(1)
The Company includes the shares underlying performance-based awards in the calculation of diluted earnings per share if the performance conditions have been satisfied as of the end of the reporting period and excludes such shares when the necessary conditions have not been met. The Company has excluded the shares underlying the 2015 and 2014 awards in the 2015 and 2014 calculations, respectively, as those shares were not contingently issuable as of the end of the period.