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Net Income per Common Share (Tables)
 12 Months Ended
Jul. 31, 2014
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:
 
Years ended July 31,
 
2014
 
2013
 
2012
Numerator: (in thousands)
 
 
 
 
 
(Loss) earnings from continuing operations
$
(48,146
)
 
$
(138,257
)
 
$
103,493

Less:
 
 
 
 
 
Restricted stock dividends
(92
)
 
(238
)
 
(229
)
Numerator for basic and diluted earnings from continuing operations per Class A Nonvoting Common Share
$
(48,238
)
 
$
(138,495
)
 
$
103,264

Less:
 
 
 
 
 
Preferential dividends
(813
)
 
(797
)
 
(818
)
Preferential dividends on dilutive stock options
(6
)
 
(5
)
 
(5
)
Numerator for basic and diluted earnings from continuing operations per Class B Voting Common Share
$
(49,057
)
 
$
(139,297
)
 
$
102,441

Denominator: (in thousands)
 
 
 
 
 
Denominator for basic earnings from continuing operations per share for both Class A and Class B
51,866

 
51,330

 
52,453

Plus: Effect of dilutive stock options
—

 
—

 
368

Denominator for diluted earnings from continuing operations per share for both Class A and Class B
51,866

 
51,330

 
52,821

(Loss) earnings from continuing operations per Class A Nonvoting Common Share:
 
 
 
 
 
Basic
$
(0.93
)
 
$
(2.70
)
 
$
1.97

Diluted
$
(0.93
)
 
$
(2.70
)
 
$
1.95

(Loss) earnings from continuing operations per Class B Voting Common Share:
 
 
 
 
 
Basic
$
(0.95
)
 
$
(2.71
)
 
$
1.95

Diluted
$
(0.95
)
 
$
(2.71
)
 
$
1.94

Earnings (loss) from discontinued operations per Class A Nonvoting Common Share:
 
 
 
 
 
Basic
$
0.04

 
$
(0.32
)
 
$
(2.31
)
Diluted
$
0.04

 
$
(0.32
)
 
$
(2.29
)
Earnings (loss) from discontinued operations per Class B Voting Common Share:
 
 
 
 
 
Basic
$
0.05

 
$
(0.32
)
 
$
(2.31
)
Diluted
$
0.05

 
$
(0.32
)
 
$
(2.30
)
Net loss per Class A Nonvoting Common Share:
 
 
 
 
 
Basic
$
(0.89
)
 
$
(3.02
)
 
$
(0.35
)
Diluted
$
(0.89
)
 
$
(3.02
)
 
$
(0.34
)
Net loss per Class B Voting Common Share:
 
 
 
 
 
Basic
$
(0.90
)
 
$
(3.03
)
 
$
(0.36
)
Diluted
$
(0.90
)
 
$
(3.03
)
 
$
(0.36
)