NET LOSS PER SHARE - Antidilutive Securities (Details) - shares
|
3 Months Ended |
6 Months Ended |
Jan. 31, 2017 |
Jan. 31, 2016 |
Jan. 31, 2017 |
Jan. 31, 2016 |
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
|
|
|
|
| Antidilutive securities excluded from computation of earnings per share (in shares) |
45,416,354
|
112,953,836
|
45,416,354
|
112,953,836
|
| Stock awards |
|
|
|
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
|
|
|
|
| Antidilutive securities excluded from computation of earnings per share (in shares) |
44,813,334
|
34,306,230
|
44,813,334
|
34,306,230
|
| Common stock subject to repurchase |
|
|
|
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
|
|
|
|
| Antidilutive securities excluded from computation of earnings per share (in shares) |
551,750
|
1,504,001
|
551,750
|
1,504,001
|
| Common stock warrants |
|
|
|
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
|
|
|
|
| Antidilutive securities excluded from computation of earnings per share (in shares) |
51,270
|
0
|
51,270
|
0
|
| Convertible preferred stock |
|
|
|
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
|
|
|
|
| Antidilutive securities excluded from computation of earnings per share (in shares) |
0
|
76,319,511
|
0
|
76,319,511
|
| Convertible preferred stock warrants |
|
|
|
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |
|
|
|
|
| Antidilutive securities excluded from computation of earnings per share (in shares) |
0
|
824,094
|
0
|
824,094
|