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REVENUE, DEFERRED REVENUE AND DEFERRED COMMISSIONS - ASC 606 Impact on Cash Flows (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Oct. 31, 2017 | Oct. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Net loss | $ (61,487) | $ (140,302) | [1]
Adjustments to reconcile net loss to net cash provided by operating activities: |  |  |
Deferred commission | (8,457) | (4,780) | [2]
Accrued expenses and other liabilities | (293) | 717 | [2]
Deferred revenue | $ 39,788 | 51,206 | [2]
Accounting Standards Update 2014-09 |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Net loss |  | (140,302) |
Adjustments to reconcile net loss to net cash provided by operating activities: |  |  |
Deferred commission |  | 4,780 |
Accrued expenses and other liabilities |  | 717 |
Deferred revenue |  | 51,206 |
Accounting Standards Update 2014-09 | Scenario, Previously Reported |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Net loss |  | (162,169) |
Adjustments to reconcile net loss to net cash provided by operating activities: |  |  |
Deferred commission |  | 4,630 |
Accrued expenses and other liabilities |  | 682 |
Deferred revenue |  | 72,958 |
Accounting Standards Update 2014-09 | Restatement Adjustment |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Net loss |  | 21,867 |
Adjustments to reconcile net loss to net cash provided by operating activities: |  |  |
Deferred commission |  | 150 |
Accrued expenses and other liabilities |  | 35 |
Deferred revenue |  | $ (21,752) |
[1] | See Note 3 for a summary of adjustments related to the adoption of the new revenue recognition standard.
[2] | See Note 3 for a summary of adjustments related to the adoption of the new revenue recognition standard.

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