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Stockholder's Equity (Tables) | 12 Months Ended
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Jul. 31, 2015
Equity [Abstract] |
Schedule of stock options exercised | The exercised stock options are summarized in the following table:
Period | Options Exercised |  | Exercise Price |  | Shares Net Settled for Exercise |  | Shares Withheld for Taxes(1) |  | Net Shares to Employee |  | Share Price for Withholding |  | Tax Withholding (in 000s)
FY 2013—Q2 | 73,228 |  |  | $ | 8.89 |  |  | 18,127 |  |  | 17,461 |  |  | 37,640 |  |  | $ | 35.91 |  |  | $ | 627 |
FY 2014—Q1 | 14,000 |  |  | 16.43 |  |  | 7,241 |  |  | 2,519 |  |  | 4,240 |  |  | 31.77 |  |  | 80 |
FY 2015—Q1 | 201,333 |  |  | 19.59 |  |  | 124,621 |  |  | 35,416 |  |  | 41,296 |  |  | 31.65 |  |  | 1,121 |
FY 2015—Q3 | 139,690 |  |  | 20.27 |  |  | 76,021 |  |  | 20,656 |  |  | 43,013 |  |  | 37.27 |  |  | 770 |
FY 2015—Q4 | 200,000 |  |  | 12.02 |  |  | 66,602 |  |  | 52,158 |  |  | 81,240 |  |  | 36.08 |  |  | 1,882 |
(1) | Shares withheld for taxes are treated as a repurchase of shares for accounting purposes but do not count against the Company’s stock repurchase program.
Schedule of share-based compensation expense | The following table details stock-based payment compensation expense included in the company’s consolidated statements of income:
| Year Ended July 31,
(In thousands) | 2015 |  | 2014 |  | 2013
General and administrative | $ | 15,938 |  |  | $ | 19,489 |  |  | $ | 17,238 |
Yard operations | 2,216 |  |  | 2,610 |  |  | 2,319 |
Total stock-based payment compensation | $ | 18,154 |  |  | $ | 22,099 |  |  | $ | 19,557 |
Schedule of non-vested shares | A summary of the status of the Company’s non-vested shares and its activity during the year ended July 31, 2015 was as follows:
(In thousands, except per share amounts) | Number of Shares |  | Weighted Average Grant- date Fair Value
Non-vested shares at July 31, 2014 | 5,921 |  |  | $ | 10.39 |
Grants of non-vested shares | 2,891 |  |  | 10.18 |
Vested | (1,984 | ) |  | 9.83 |
Forfeitures or expirations | (213 | ) |  | 10.37 |
Non-vested shares at July 31, 2015 | 6,615 |  |  | $ | 10.48 |
Schedule of option activity | Stock option activity for the year ended July 31, 2015 was as follows:
(In thousands, except per share and term data) | Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (In years) |  | Aggregate Intrinsic Value
Outstanding as of July 31, 2014 | 19,082 |  |  | $ | 21.64 |  |  | 6.01 |  | $ | 235,734 |
Grants of options | 2,891 |  |  | 35.95 |  |  |  |  |
Exercises | (749 | ) |  | 17.11 |  |  |  |  |
Forfeitures or expirations | (213 | ) |  | 33.40 |  |  |  |  |
Outstanding as of July 31, 2015 | 21,011 |  |  | $ | 23.65 |  |  | 5.78 |  | $ | 261,339 |
Exercisable as of July 31, 2015 | 14,396 |  |  | $ | 18.38 |  |  | 4.37 |  | $ | 254,158 |
Vested and expected to vest as of July 31, 2015 | 20,542 |  |  | $ | 23.39 |  |  | 5.72 |  | $ | 260,845 |
Schedule of stock options outstanding and exercisable | The following table summarizes stock options outstanding and exercisable as of July 31, 2015:
(In thousands, except per share amount) | Options Outstanding |  | Options Exercisable
Range of Exercise Prices | Number |  | Weighted Average Remaining Contractual Life |  | Weighted Average Exercise Price |  | Number |  | Weighted Average Exercise Price
$12.02–$17.20 | 10,484 |  |  | 3.61 |  | $ | 15.42 |  |  | 10,464 |  |  | $ | 15.42 |
$17.32–$21.05 | 2,122 |  |  | 4.90 |  | 19.83 |  |  | 1,942 |  |  | 19.76 |
$22.47–$35.45 | 2,503 |  |  | 8.95 |  | 32.29 |  |  | 594 |  |  | 25.21 |
$35.62–$37.22 | 5,902 |  |  | 8.61 |  | 35.99 |  |  | 1,396 |  |  | 35.71 |
| 21,011 |  |  | 5.78 |  | 23.65 |  |  | 14,396 |  |  | 18.38 |

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