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Earnings per share (Tables)
 9 Months Ended
Aug. 31, 2019
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,
2019
 
August 31,
2018
 
August 31,
2019
 
August 31,
2018
 
 
 
As Adjusted(1)
 
 
 
As Adjusted(1)
Net income
$
13,557

 
$
14,390

 
$
31,140

 
$
41,026

Weighted average shares outstanding
44,716

 
45,130

 
44,761

 
45,730

Dilutive impact from common stock equivalents
587

 
446

 
531

 
650

Diluted weighted average shares outstanding
45,303

 
45,576

 
45,292

 
46,380

Basic earnings per share
$
0.30

 
$
0.32

 
$
0.70

 
$
0.90

Diluted earnings per share
$
0.30

 
$
0.32

 
$
0.69

 
$
0.88

(1)The Company adopted ASC 606 effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Basis of Presentation for further information.