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EQUITY AWARD PLANS (Tables) | 3 Months Ended
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Oct. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of RSUs Activity | The summary of RSU activity under the Stock Plans is as follows:
| Number of Shares |  | Grant Date Fair Value per Share
Outstanding—July 31, 2017 | 17,376,090 |  |  | $ | 18.85 |
Granted | 1,553,392 |  |  | $ | 23.72 |
Released | (1,412,978 | ) |  | $ | 16.04 |
Canceled/forfeited | (771,957 | ) |  | $ | 23.58 |
Outstanding—October 31, 2017 | 16,744,547 |  |  | $ | 19.32 |
Schedule of ESPP Valuation Assumptions | We use the Black-Scholes option-pricing model to determine the fair value of shares purchased under the 2016 ESPP with the following weighted-average assumptions on the date of grant:
| Three Months Ended October 31,
| 2016 |  | 2017
Expected term (in years) | 0.75 |  |  | 0.75 |
Risk-free interest rate | 0.6 | % |  | 1.25 | %
Volatility | 50.6 | % |  | 50.2 | %
Dividend yield | — | % |  | — | %
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs | Total stock-based compensation expense recognized for stock awards in the consolidated statements of operations is as follows (in thousands):
| Three Months Ended October 31,
| 2016 |  | 2017
| (in thousands)
Cost of revenue: |  |  |
Product | $ | 966 |  |  | $ | 570 |
Support and other services | 3,350 |  |  | 2,072 |
Sales and marketing | 33,891 |  |  | 13,766 |
Research and development | 34,026 |  |  | 15,542 |
General and administrative | 18,495 |  |  | 3,565 |
Total stock-based compensation expense | $ | 90,728 |  |  | $ | 35,515 |

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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 of the changes in outstanding nonvested restricted stock units. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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