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Stockholder's Equity (Tables) | 12 Months Ended
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Jul. 31, 2017
Equity [Abstract] |
Schedule of stock options exercised | The exercised stock options, utilizing a cashless exercise, are summarized in the following table:
Period |  | Options Exercised |  | Weighted Average Exercise Price |  | Shares Net Settled for Exercise |  | Shares Withheld for Taxes(1) |  | Net Shares to Employees |  | Weighted Average Share Price for Withholding |  | Employee Stock Based Tax Withholding (in 000s)
FY 2015—Q1 |  | 402,666 |  |  | $ | 9.80 |  |  | 249,242 |  |  | 70,832 |  |  | 82,592 |  |  | $ | 15.83 |  |  | $ | 1,121 |
FY 2015—Q3 |  | 279,380 |  |  | 10.14 |  |  | 152,042 |  |  | 41,312 |  |  | 86,026 |  |  | 18.64 |  |  | 770 |
FY 2015—Q4 |  | 400,000 |  |  | 6.01 |  |  | 133,204 |  |  | 104,316 |  |  | 162,480 |  |  | 18.04 |  |  | 1,882 |
FY 2016—Q4 |  | 2,260,000 |  |  | 9.32 |  |  | 821,296 |  |  | 586,304 |  |  | 852,400 |  |  | 25.65 |  |  | 15,039 |
FY 2017—Q1 |  | 18,000,000 |  |  | 7.70 |  |  | 5,408,972 |  |  | 5,255,322 |  |  | 7,335,706 |  |  | 25.62 |  |  | 134,615 |
(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) |  | 2017 |  | 2016 |  | 2015
General and administrative |  | $ | 17,622 |  |  | $ | 18,194 |  |  | $ | 15,938 |
Yard operations |  | 3,286 |  |  | 2,670 |  |  | 2,216 |
Total stock-based payment compensation |  | $ | 20,908 |  |  | $ | 20,864 |  |  | $ | 18,154 |
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, 2017 was as follows:
(In thousands, except per share amounts) |  | Number of Shares |  | Weighted Average Grant- date Fair Value
Non-vested shares at July 31, 2016 |  | 9,622 |  |  | $ | 5.33 |
Grants of non-vested shares |  | 939 |  |  | 7.05 |
Vested |  | (3,509 | ) |  | 5.30 |
Forfeitures or expirations |  | (385 | ) |  | 5.55 |
Non-vested shares at July 31, 2017 |  | 6,667 |  |  | $ | 5.57 |
Schedule of option activity | Stock option activity for the year ended July 31, 2017 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, 2016 |  | 38,902 |  |  | $ | 12.15 |  |  | 4.96 |  | $ | 508,401 |
Grants of options |  | 939 |  |  | 27.83 |  |  |  |  |
Exercises |  | (20,682 | ) |  | 8.21 |  |  |  |  |
Forfeitures or expirations |  | (385 | ) |  | 19.12 |  |  |  |  |
Outstanding as of July 31, 2017 |  | 18,774 |  |  | $ | 17.14 |  |  | 6.48 |  | $ | 269,449 |
Exercisable as of July 31, 2017 |  | 12,112 |  |  | $ | 15.95 |  |  | 5.96 |  | $ | 188,211 |
Vested and expected to vest as of July 31, 2017 |  | 18,316 |  |  | $ | 17.09 |  |  | 6.45 |  | $ | 263,691 |
Schedule of stock options outstanding and exercisable | The following table summarizes stock options outstanding and exercisable as of July 31, 2017:
(In thousands, except per share amounts) |  | Options Outstanding |  | Options Exercisable
Range of Exercise Prices |  | Number |  | Weighted Average Remaining Contractual Life |  | Weighted Average Exercise Price |  | Number |  | Weighted Average Exercise Price
$6.54–$10.28 |  | 2,285 |  |  | 3.18 |  | $ | 9.53 |  |  | 2,285 |  |  | $ | 9.53 |
$10.52–$17.73 |  | 3,890 |  |  | 7.10 |  | 16.34 |  |  | 2,047 |  |  | 15.18 |
$17.81–$18.23 |  | 9,352 |  |  | 6.44 |  | 17.87 |  |  | 6,569 |  |  | 17.88 |
$18.32–$31.24 |  | 3,247 |  |  | 8.19 |  | 21.34 |  |  | 1,211 |  |  | 18.94 |
Outstanding and exercisable as of July 31, 2017 |  | 18,774 |  |  | 6.48 |  | 17.14 |  |  | 12,112 |  |  | 15.95 |

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