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BALANCE SHEET COMPONENTS - Intangible Assets (Details) - USD ($) $ in Thousands | Apr. 30, 2019 | Jul. 31, 2018
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | $ 92,330 | $ 54,150
Less: |  |
Accumulated amortization | (21,212) | (8,784)
Total intangible assets, net | 71,118 | 45,366
Developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 79,300 | 47,500
Less: |  |
Accumulated amortization | (17,515) | (6,956)
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 8,860 | 6,650
Less: |  |
Accumulated amortization | (3,002) | (1,828)
Trade Names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 4,170 | 0
Less: |  |
Accumulated amortization | $ (695) | $ 0

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