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Net Income per Common Share (Tables) | 9 Months Ended
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Apr. 30, 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:
| Three months ended April 30, |  | Nine months ended April 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Numerator: (in thousands) |  |  |  |  |  |  |
Earnings from continuing operations | $ | 20,981 |  |  | $ | 17,213 |  |  | $ | 54,974 |  |  | $ | 44,296 |
Less: |  |  |  |  |  |  |
Preferential dividends | — |  |  | — |  |  | (783 | ) |  | (794 | )
Preferential dividends on dilutive stock options | — |  |  | — |  |  | (1 | ) |  | (1 | )
Numerator for basic and diluted earnings from continuing operations per Class B Voting Common Share | $ | 20,981 |  |  | $ | 17,213 |  |  | $ | 54,190 |  |  | $ | 43,501 |
Denominator: (in thousands) |  |  |  |  |  |  |
Denominator for basic earnings from continuing operations per share for both Class A and Class B | 50,251 |  |  | 51,301 |  |  | 50,602 |  |  | 51,275 |
Plus: Effect of dilutive stock options | 254 |  |  | 149 |  |  | 145 |  |  | 95 |
Denominator for diluted earnings from continuing operations per share for both Class A and Class B | 50,505 |  |  | 51,450 |  |  | 50,747 |  |  | 51,370 |
Earnings from continuing operations per Class A Nonvoting Common Share: |  |  |  |  |  |  |
Basic | $ | 0.42 |  |  | $ | 0.34 |  |  | $ | 1.09 |  |  | $ | 0.86 |
Diluted | $ | 0.42 |  |  | $ | 0.33 |  |  | $ | 1.08 |  |  | $ | 0.86 |
Earnings from continuing operations per Class B Voting Common Share: |  |  |  |  |  |  |
Basic | $ | 0.42 |  |  | $ | 0.34 |  |  | $ | 1.07 |  |  | $ | 0.85 |
Diluted | $ | 0.42 |  |  | $ | 0.33 |  |  | $ | 1.07 |  |  | $ | 0.85 |
Loss from discontinued operations per Class A Nonvoting Common Share: |  |  |  |  |  |  |
Basic | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (0.03 | )
Diluted | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (0.03 | )
Loss from discontinued operations per Class B Voting Common Share: |  |  |  |  |  |  |
Basic | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (0.04 | )
Diluted | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (0.04 | )
Net earnings per Class A Nonvoting Common Share: |  |  |  |  |  |  |
Basic | $ | 0.42 |  |  | $ | 0.34 |  |  | $ | 1.09 |  |  | $ | 0.83 |
Diluted | $ | 0.42 |  |  | $ | 0.33 |  |  | $ | 1.08 |  |  | $ | 0.83 |
Net earnings per Class B Voting Common Share: |  |  |  |  |  |  |
Basic | $ | 0.42 |  |  | $ | 0.34 |  |  | $ | 1.07 |  |  | $ | 0.81 |
Diluted | $ | 0.42 |  |  | $ | 0.33 |  |  | $ | 1.07 |  |  | $ | 0.81 |

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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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