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Earnings Per Share (Tables)
 9 Months Ended
Aug. 31, 2012
Earnings Per Share [Abstract]  
Calculation of Basic and Diluted Earnings Per Share
The following table sets forth the calculation of basic and diluted earnings per share from continuing operations on an interim basis (in thousands, expect per share data):
 
 
Three Months Ended
 
Nine Months Ended
 
August 31,
2012
 
August 31,
2011
 
August 31,
2012
 
August 31,
2011
Income from continuing operations
$
7,976

 
$
9,588

 
$
14,857

 
$
48,497

Weighted average shares outstanding
63,469

 
65,861

 
62,888

 
66,581

Dilutive impact from common stock equivalents
636

 
1,419

 
907

 
2,147

Diluted weighted average shares outstanding
64,105

 
67,280

 
63,795

 
68,728

Basic earnings per share from continuing operations
$
0.13

 
$
0.15

 
$
0.24

 
$
0.73

Diluted earnings per share from continuing operations
$
0.12

 
$
0.14

 
$
0.23

 
$
0.71