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Stockholder's Equity (Tables) | 12 Months Ended
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Jul. 31, 2016
Equity [Abstract] |
Schedule of stock options exercised | The exercised stock options, utilizing a cashless exercise, 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 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 |
FY 2016—Q4 | 1,130,000 |  |  | 18.64 |  |  | 410,648 |  |  | 293,152 |  |  | 426,200 |  |  | 51.30 |  |  | 15,039 |
(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) | 2016 |  | 2015 |  | 2014
General and administrative | $ | 18,194 |  |  | $ | 15,938 |  |  | $ | 19,489 |
Yard operations | 2,670 |  |  | 2,216 |  |  | 2,610 |
Total stock-based payment compensation | $ | 20,864 |  |  | $ | 18,154 |  |  | $ | 22,099 |
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, 2016 was as follows:
(In thousands, except per share amounts) | Number of Shares |  | Weighted Average Grant- date Fair Value
Non-vested shares at July 31, 2015 | 6,615 |  |  | $ | 10.48 |
Grants of non-vested shares | 432 |  |  | 10.07 |
Vested | (2,074 | ) |  | 10.12 |
Forfeitures or expirations | (162 | ) |  | 8.63 |
Non-vested shares at July 31, 2016 | 4,811 |  |  | $ | 10.66 |
Schedule of option activity | Stock option activity for the year ended July 31, 2016 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, 2015 | 21,011 |  |  | $ | 23.65 |  |  | 5.78 |  | $ | 261,339 |
Grants of options | 432 |  |  | 38.71 |  |  |  |  |
Exercises | (1,830 | ) |  | 19.19 |  |  |  |  |
Forfeitures or expirations | (162 | ) |  | 35.87 |  |  |  |  |
Outstanding as of July 31, 2016 | 19,451 |  |  | $ | 24.30 |  |  | 4.96 |  | $ | 508,401 |
Exercisable as of July 31, 2016 | 14,640 |  |  | $ | 20.47 |  |  | 3.91 |  | $ | 438,774 |
Vested and expected to vest as of July 31, 2016 | 19,121 |  |  | $ | 24.10 |  |  | 4.90 |  | $ | 503,601 |
Schedule of stock options outstanding and exercisable | The following table summarizes stock options outstanding and exercisable as of July 31, 2016:
(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
$13.08–$15.11 | 8,056 |  |  | 2.70 |  | $ | 15.09 |  |  | 8,056 |  |  | $ | 15.09 |
$16.38–$19.78 | 2,119 |  |  | 2.27 |  | 17.29 |  |  | 2,119 |  |  | 17.29 |
$20.56–$35.62 | 6,851 |  |  | 7.27 |  | 32.81 |  |  | 3,617 |  |  | 30.56 |
$35.72–$49.51 | 2,425 |  |  | 8.27 |  | 37.00 |  |  | 848 |  |  | 36.48 |
| 19,451 |  |  | 4.96 |  | 24.30 |  |  | 14,640 |  |  | 20.47 |

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