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Net Income per Common Share (Tables)
 3 Months Ended
Oct. 31, 2014
Text Block [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,
 
2014
 
2013
Numerator: (in thousands)
 
 
 
Earnings from continuing operations
$
15,499

 
$
18,134

Less:
 
 
 
Restricted stock dividends
—

 
(45
)
Numerator for basic and diluted earnings from continuing operations per Class A Nonvoting Common Share
$
15,499

 
$
18,089

Less:
 
 
 
Preferential dividends
(794
)
 
(813
)
Preferential dividends on dilutive stock options
(1
)
 
(6
)
Numerator for basic and diluted earnings from continuing operations per Class B Voting Common Share
$
14,704

 
$
17,270

Denominator: (in thousands)
 
 
 
Denominator for basic earnings from continuing operations per share for both Class A and Class B
51,251

 
52,071

Plus: Effect of dilutive stock options
62

 
348

Denominator for diluted earnings from continuing operations per share for both Class A and Class B
51,313

 
52,419

Earnings from continuing operations per Class A Nonvoting Common Share:
 
 
 
Basic
$
0.30

 
$
0.35

Diluted
$
0.30

 
$
0.35

Earnings from continuing operations per Class B Voting Common Share:
 
 
 
Basic
$
0.29

 
$
0.33

Diluted
$
0.29

 
$
0.33

(Loss) earnings from discontinued operations per Class A Nonvoting Common Share:
 
 
 
Basic
$
(0.03
)
 
$
0.11

Diluted
$
(0.04
)
 
$
0.11

(Loss) earnings from discontinued operations per Class B Voting Common Share:
 
 
 
Basic
$
(0.04
)
 
$
0.11

Diluted
$
(0.04
)
 
$
0.11

Net earnings per Class A Nonvoting Common Share:
 
 
 
Basic
$
0.27

 
$
0.46

Diluted
$
0.26

 
$
0.46

Net earnings per Class B Voting Common Share:
 
 
 
Basic
$
0.25

 
$
0.44

Diluted
$
0.25

 
$
0.44