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Revenue and Deferred Revenue - Components of Deferred Revenue (Details) - USD ($) $ in Thousands | Jul. 31, 2020 | Jan. 31, 2020
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Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | $ 16,389 | $ 15,971
Less: current deferred revenue | 16,270 | 15,797
Non-current deferred revenue included in other long-term liabilities | 119 | 174
Subscription and Services |  |
Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | 16,316 | 15,892
Product and Other |  |
Deferred Revenue Arrangement [Line Items] |  |
Deferred revenue | $ 73 | $ 79

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