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Stock-based Payment Compensation (Tables) | 6 Months Ended
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Jan. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of option activity for stock options | The following is a summary of activity for the Company’s stock options for the six months ended January 31, 2018:
(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, 2017 |  | 18,774 |  |  | $ | 17.14 |  |  | 6.48 |  | $ | 269,449 |
Grants of options |  | 2,348 |  |  | 36.58 |  |  |  |  |
Exercises |  | (1,194 | ) |  | 14.35 |  |  |  |  |
Forfeitures or expirations |  | (21 | ) |  | 17.72 |  |  |  |  |
Outstanding as of January 31, 2018 |  | 19,907 |  |  | $ | 19.60 |  |  | 6.48 |  | $ | 487,199 |
Exercisable as of January 31, 2018 |  | 12,753 |  |  | $ | 16.66 |  |  | 5.71 |  | $ | 349,585 |
Recognized stock-based compensation expense | The table below sets forth the stock-based payment compensation recognized by the Company:
|  | Three Months Ended January 31, |  | Six Months Ended January 31,
(In thousands) |  | 2018 |  | 2017 |  | 2018 |  | 2017
General and administrative |  | $ | 4,990 |  |  | $ | 4,712 |  |  | $ | 9,444 |  |  | $ | 8,996 |
Yard operations |  | 1,002 |  |  | 808 |  |  | 1,854 |  |  | 1,609 |
Total stock-based payment compensation |  | $ | 5,992 |  |  | $ | 5,520 |  |  | $ | 11,298 |  |  | $ | 10,605 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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