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OVERVIEW AND BASIS OF PRESENTATION (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2020 | Jan. 31, 2019 | Jul. 31, 2019 | Aug. 01, 2019
Concentration Risk [Line Items] |  |  |  |  |  |  |
Operating lease right-of-use assets | [1] | $ 135,680 |  | $ 135,680 |  | $ 0 |
Operating lease, liability |  | $ 161,088 |  | $ 161,088 |  |  |
Accounting Standards Update 2016-02 |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Operating lease right-of-use assets |  |  |  |  |  |  | $ 120,200
Operating lease, liability |  |  |  |  |  |  | $ 142,100
Partner Concentration Risk | Revenue | Partner A |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration risk percentage |  | 32.00% | 23.00% | 30.00% | 22.00% |  |
Partner Concentration Risk | Revenue | Partner C |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration risk percentage |  | 14.00% | 12.00% | 13.00% | 12.00% |  |
Partner Concentration Risk | Revenue | Partner D |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration risk percentage |  |  |  |  | 10.00% |  |
Partner Concentration Risk | Revenue | Partner E |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration risk percentage |  |  | 11.00% |  | 11.00% |  |
Partner Concentration Risk | Accounts Receivable | Partner A |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration risk percentage |  |  |  | 28.00% |  | 27.00% |
Partner Concentration Risk | Accounts Receivable | Partner B |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration risk percentage |  |  |  | 16.00% |  |  |
Partner Concentration Risk | Accounts Receivable | Partner C |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration risk percentage |  |  |  | 14.00% |  | 18.00% |
[1] | During the first quarter of fiscal 2020, we adopted Accounting Standards Update ("ASU") No. 2016-02 using the modified retrospective method and elected the transition option that allowed us not to restate the comparative periods in our condensed consolidated financial statements in the year of adoption. For additional details, refer to Note 1.

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