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Net Income per Common Share (Tables)
 3 Months Ended
Oct. 31, 2019
Earnings Per Share [Abstract]  
Reconciliations of Numerator and Denominator of Basic and Diluted Per Share
Reconciliations of the numerator and denominator of the basic and diluted per share computations for the Company’s Class A and Class B common stock are summarized as follows:
 
Three months ended October 31,
 
2019
 
2018
Numerator (in thousands):
 
 
 
Income (Numerator for basic and diluted income per Class A Nonvoting Common Share)
$
37,498

 
$
30,637

Less:
 
 
 
Preferential dividends
(828
)
 
(815
)
Preferential dividends on dilutive stock options
(10
)
 
(13
)
Numerator for basic and diluted income per Class B Voting Common Share
$
36,660

 
$
29,809

Denominator: (in thousands)
 
 
 
Denominator for basic income per share for both Class A and Class B
53,143

 
52,201

Plus: Effect of dilutive equity awards
593

 
757

Denominator for diluted income per share for both Class A and Class B
53,736

 
52,958

Net income per Class A Nonvoting Common Share:
 
 
 
Basic
$
0.71

 
$
0.59

Diluted
$
0.70

 
$
0.58

Net income per Class B Voting Common Share:
 
 
 
Basic
$
0.69

 
$
0.57

Diluted
$
0.68

 
$
0.56