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Net Income per Common Share (Tables)
 9 Months Ended
Apr. 30, 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 April 30,
 
Nine months ended April 30,
 
2014
 
2013
 
2014
 
2013
Numerator: (in thousands)
 
 
 
 
 
 
 
Earnings from continuing operations
$
20,184

 
$
21,680

 
$
48,835

 
$
37,300

Less:
 
 
 
 
 
 
 
Restricted stock dividends
(16
)
 
(60
)
 
(76
)
 
(179
)
Numerator for basic and diluted earnings from continuing operations per Class A Nonvoting Common Share
$
20,168

 
$
21,620

 
$
48,759

 
$
37,121

Less:
 
 
 
 
 
 
 
Preferential dividends
—

 
—

 
(813
)
 
(797
)
Preferential dividends on dilutive stock options
—

 
—

 
(6
)
 
(5
)
Numerator for basic and diluted earnings from continuing operations per Class B Voting Common Share
$
20,168

 
$
21,620

 
$
47,940

 
$
36,319

Denominator: (in thousands)
 
 
 
 
 
 
 
Denominator for basic earnings from continuing operations per share for both Class A and Class B
51,933

 
51,415

 
52,071

 
51,210

Plus: Effect of dilutive stock options
67

 
626

 
233

 
475

Denominator for diluted earnings from continuing operations per share for both Class A and Class B
52,000

 
52,041

 
52,304

 
51,685

Earnings from continuing operations per Class A Nonvoting Common Share:
 
 
 
 
 
 
 
Basic
$
0.39

 
$
0.42

 
$
0.94

 
$
0.72

Diluted
$
0.39

 
$
0.42

 
$
0.93

 
$
0.72

Earnings from continuing operations per Class B Voting Common Share:
 
 
 
 
 
 
 
Basic
$
0.39

 
$
0.42

 
$
0.92

 
$
0.71

Diluted
$
0.39

 
$
0.42

 
$
0.92

 
$
0.70

Earnings (loss) from discontinued operations per Class A Nonvoting Common Share:
 
 
 
 
 
 
 
Basic
$
0.07

 
$
(0.34
)
 
$
0.30

 
$
(0.28
)
Diluted
$
0.07

 
$
(0.34
)
 
$
0.30

 
$
(0.28
)
Earnings (loss) from discontinued operations per Class B Voting Common Share:
 
 
 
 
 
 
 
Basic
$
0.07

 
$
(0.34
)
 
$
0.30

 
$
(0.29
)
Diluted
$
0.07

 
$
(0.34
)
 
$
0.29

 
$
(0.28
)
Net earnings per Class A Nonvoting Common Share:
 
 
 
 
 
 
 
Basic
$
0.46

 
$
0.08

 
$
1.24

 
$
0.44

Diluted
$
0.46

 
$
0.08

 
$
1.23

 
$
0.44

Net earnings per Class B Voting Common Share:
 
 
 
 
 
 
 
Basic
$
0.46

 
$
0.08

 
$
1.22

 
$
0.42

Diluted
$
0.46

 
$
0.08

 
$
1.21

 
$
0.42