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Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The calculation of basic and diluted earnings per common share follows (in thousands, except per share amounts):
 
Three Months Ending
 
Nine Months Ending
 
September 30,
 
September 30,
 
2013
 
2012
 
2013
 
2012
Earnings from continuing operations
$
7,799

 
$
11,556

 
$
23,215

 
$
29,437

Weighted-average shares outstanding for basic earnings per share
64,052

 
63,456

 
63,972

 
63,439

Common equivalent shares:
 
 
 
 
 
 
 
Effect of stock-based compensation awards
984

 
1,211

 
835

 
1,039

Weighted-average shares outstanding assuming dilution
65,036

 
64,667

 
64,807

 
64,478

Basic earnings per share from continuing operations
$
0.12

 
$
0.18

 
$
0.36

 
$
0.46

Diluted earnings per share from continuing operations
$
0.12

 
$
0.18

 
$
0.36

 
$
0.46