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EARNINGS PER SHARE (Tables)
 6 Months Ended
Jun. 30, 2012
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following is a calculation of basic and diluted earnings per share and weighted-average shares outstanding (in thousands, except per share amounts):
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2012
 
2011
 
2012
 
2011
Income from continuing operations—basic and diluted
$
9,454

 
$
7,742

 
$
18,073

 
$
14,329

 
 
 
 
 
 
 
 
Weighted-average shares outstanding—basic
62,640

 
66,210

 
63,379

 
65,778

Add shares issuable upon exercise of stock options
3,364

 
4,307

 
3,496

 
4,630

Weighted-average shares outstanding—diluted
66,004

 
70,517

 
66,875

 
70,408

 
 
 
 
 
 
 
 
Basic earnings per share
$
0.15

 
$
0.12

 
$
0.29

 
$
0.22

Diluted earnings per share
$
0.14

 
$
0.11

 
$
0.27

 
$
0.20