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Net Income per Common Share (Tables)
 3 Months Ended
Oct. 31, 2013
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,
 
2013
 
2012
Numerator: (in thousands)
 
 
 
Earnings from continuing operations
$
17,423

 
$
25,785

Less:
 
 
 
Restricted stock dividends
(45
)
 
(59
)
Numerator for basic and diluted earnings from continuing operations per Class A Nonvoting Common Share
$
17,378

 
$
25,726

Less:
 
 
 
Preferential dividends
(813
)
 
(797
)
Preferential dividends on dilutive stock options
(6
)
 
(4
)
Numerator for basic and diluted earnings from continuing operations per Class B Voting Common Share
$
16,559

 
$
24,925

Denominator: (in thousands)
 
 
 
Denominator for basic earnings from continuing operations per share for both Class A and Class B
52,071

 
51,039

Plus: Effect of dilutive stock options
348

 
273

Denominator for diluted earnings from continuing operations per share for both Class A and Class B
52,419

 
51,312

Earnings from continuing operations per Class A Nonvoting Common Share:
 
 
 
Basic
$
0.33

 
$
0.50

Diluted
$
0.33

 
$
0.50

Earnings from continuing operations per Class B Voting Common Share:
 
 
 
Basic
$
0.32

 
$
0.49

Diluted
$
0.32

 
$
0.49

Earnings from discontinued operations per Class A Nonvoting Common Share:
 
 
 
Basic
$
0.13

 
$
0.03

Diluted
$
0.13

 
$
0.03

Earnings from discontinued operations per Class B Voting Common Share:
 
 
 
Basic
$
0.12

 
$
0.03

Diluted
$
0.12

 
$
0.02

Net Earnings per Class A Nonvoting Common Share:
 
 
 
Basic
$
0.46

 
$
0.53

Diluted
$
0.46

 
$
0.53

Net earnings per Class B Voting Common Share:
 
 
 
Basic
$
0.44

 
$
0.52

Diluted
$
0.44

 
$
0.51