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Earnings Per Share (Tables)
 9 Months Ended
Aug. 31, 2016
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 on an interim basis (in thousands, except per share data):

 
Three Months Ended
 
Nine Months Ended
 
August 31,
2016
 
August 31,
2015
 
August 31,
2016
 
August 31,
2015
Net income (loss)
$
7,576

 
$
(4,126
)
 
$
18,067

 
$
670

Weighted average shares outstanding
48,611

 
50,120

 
49,765

 
50,377

Dilutive impact from common stock equivalents
524

 
—

 
545

 
740

Diluted weighted average shares outstanding
49,135

 
50,120

 
50,310

 
51,117

Basic earnings per share
$
0.16

 
$
(0.08
)
 
$
0.36

 
$
0.01

Diluted earnings per share
$
0.15

 
$
(0.08
)
 
$
0.36

 
$
0.01