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Earnings Per Share (Tables)
 6 Months Ended
Feb. 28, 2018
Earnings Per Share [Abstract]  
Computation Of Basic And Diluted Earnings Per Share
The following table sets forth the computation of basic and diluted earnings per share:

 
Three months ended
February 28,
 
Six months ended
February 28,

 
2018
 
2017
 
2018
 
2017
Numerator:
 
 
 
 
 
 
 
 
Net income
 
$
19,607

 
$
10,963

 
$
31,037

 
$
24,081


 
 

 
 

 
 

 
 

Denominator:
 
 

 
 

 
 

 
 

Weighted average common shares outstanding– basic
 
38,284

 
43,794

 
38,806

 
44,757

Effect of dilutive employee stock options and unvested restricted stock units
 
413

 
756

 
485

 
790

Weighted average common shares outstanding – diluted
 
38,697

 
44,550

 
39,291

 
45,547


 
 

 
 

 
 

 
 

Net income per common share – basic
 
$
0.51

 
$
0.25

 
$
0.80

 
$
0.54

Net income per common share – diluted
 
$
0.51

 
$
0.25

 
$
0.79

 
$
0.53


 
 

 
 

 
 

 
 

Anti-dilutive securities excluded (1)
 
1,417

 
1,100

 
1,352

 
961

__________________
(1)
Anti-dilutive securities consist of stock options and unvested restricted stock units that were not included in the computation of diluted earnings per share because either the exercise price of the options was greater than the average market price of the common stock or the total assumed proceeds under the treasury stock method resulted in negative incremental shares and thus the inclusion would have been anti-dilutive.