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Net Income per Common Share (Tables) | 12 Months Ended
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Jul. 31, 2016
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,
| 2016 |  | 2015 |  | 2014
Numerator: (in thousands) |  |  |  |  |
Earnings (loss) from continuing operations | $ | 80,110 |  |  | $ | 4,902 |  |  | $ | (48,146 | )
Less: |  |  |  |  |
Restricted stock dividends | — |  |  | — |  |  | (92 | )
Numerator for basic and diluted earnings (loss) from continuing operations per Class A Nonvoting Common Share | $ | 80,110 |  |  | $ | 4,902 |  |  | $ | (48,238 | )
Less: |  |  |  |  |
Preferential dividends | (783 | ) |  | (794 | ) |  | (813 | )
Preferential dividends on dilutive stock options | (1 | ) |  | (1 | ) |  | (6 | )
Numerator for basic and diluted earnings (loss) from continuing operations per Class B Voting Common Share | $ | 79,326 |  |  | $ | 4,107 |  |  | $ | (49,057 | )
Denominator: (in thousands) |  |  |  |  |
Denominator for basic earnings from continuing operations per share for both Class A and Class B | 50,541 |  |  | 51,285 |  |  | 51,866 |
Plus: Effect of dilutive stock options | 228 |  |  | 98 |  |  | — |
Denominator for diluted earnings from continuing operations per share for both Class A and Class B | 50,769 |  |  | 51,383 |  |  | 51,866 |
Earnings (loss) from continuing operations per Class A Nonvoting Common Share: |  |  |  |  |
Basic | $ | 1.59 |  |  | $ | 0.10 |  |  | $ | (0.93 | )
Diluted | $ | 1.58 |  |  | $ | 0.10 |  |  | $ | (0.93 | )
Earnings (loss) from continuing operations per Class B Voting Common Share: |  |  |  |  |
Basic | $ | 1.57 |  |  | $ | 0.08 |  |  | $ | (0.95 | )
Diluted | $ | 1.56 |  |  | $ | 0.08 |  |  | $ | (0.95 | )
(Loss) earnings from discontinued operations per Class A Nonvoting Common Share: |  |  |  |  |
Basic | $ | — |  |  | $ | (0.04 | ) |  | $ | 0.04 |
Diluted | $ | — |  |  | $ | (0.04 | ) |  | $ | 0.04 |
(Loss) earnings from discontinued operations per Class B Voting Common Share: |  |  |  |  |
Basic | $ | — |  |  | $ | (0.04 | ) |  | $ | 0.05 |
Diluted | $ | — |  |  | $ | (0.04 | ) |  | $ | 0.05 |
Net earnings (loss) per Class A Nonvoting Common Share: |  |  |  |  |
Basic | $ | 1.59 |  |  | $ | 0.06 |  |  | $ | (0.89 | )
Diluted | $ | 1.58 |  |  | $ | 0.06 |  |  | $ | (0.89 | )
Net earnings (loss) per Class B Voting Common Share: |  |  |  |  |
Basic | $ | 1.57 |  |  | $ | 0.04 |  |  | $ | (0.90 | )
Diluted | $ | 1.56 |  |  | $ | 0.04 |  |  | $ | (0.90 | )

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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