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Net Income per Common Share (Tables)
 6 Months Ended
Jan. 31, 2020
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 January 31,
 
Six months ended January 31,
 
2020
 
2019
 
2020
 
2019
Numerator (in thousands):
 
 
 
 
 
 
 
Income (Numerator for basic and diluted income per
Class A Nonvoting Common Share)
$
33,553

 
$
29,227

 
$
71,051

 
$
59,864

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
$
33,553

 
$
29,227

 
$
70,213

 
$
59,036

Denominator: (in thousands)
 
 
 
 
 
 
 
Denominator for basic income per share for both
Class A and Class B
53,320

 
52,532

 
53,232

 
52,366

Plus: Effect of dilutive equity awards
507

 
674

 
549

 
716

Denominator for diluted income per share for both
Class A and Class B
53,827

 
53,206

 
53,781

 
53,082

Net income per Class A Nonvoting Common Share:
 
 
 
 
 
 
 
Basic
$
0.63

 
$
0.56

 
$
1.33

 
$
1.14

Diluted
$
0.62

 
$
0.55

 
$
1.32

 
$
1.13

Net income per Class B Voting Common Share:
 
 
 
 
 
 
 
Basic
$
0.63

 
$
0.56

 
$
1.32

 
$
1.13

Diluted
$
0.62

 
$
0.55

 
$
1.31

 
$
1.11