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Balance Sheet Components - Components of Other Assets (Details) - USD ($) $ in Thousands | Jul. 31, 2020 | Jan. 31, 2020
--- | --- | ---
Other Assets [Abstract] |  |
Deferred sales commissions, current | $ 3,573 | $ 2,525
Prepaid expenses | 2,813 | 2,739
Convertible note receivable, including accrued interest | 1,527 | 1,453
Deferred inventory costs | 511 | 867
Other current assets | 1,472 | 1,408
Total other current assets | 9,896 | 8,992
Deferred sales commissions, non-current | 9,154 | 7,412
Other non-current assets | 664 | 774
Total other non-current assets | $ 9,818 | $ 8,186

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