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Balance Sheet Components - Components of Inventories (Details) - USD ($) $ in Thousands | Jul. 31, 2020 | Jan. 31, 2020
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Inventory Disclosure [Abstract] |  |
Finished goods | $ 7,098 | $ 6,988
Raw materials | 2,151 | 1,381
Total inventory | $ 9,249 | $ 8,369

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