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Revenue - Narrative (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jul. 31, 2021 | Jul. 31, 2020 | Jan. 31, 2021
Revenue from External Customer [Line Items] |  |  |
Unearned revenue, current | $ 165,377 |  | $ 191,810
Unearned revenue, noncurrent | 200 |  |
Unearned revenue, revenue recognized | 132,600 |  |
Customer deposits | $ 700 |  | $ 200
Sales Revenue, Net | Product Concentration Risk | Professional Services |  |  |
Revenue from External Customer [Line Items] |  |  |
Concentration risk, percentage | 8.00% | 7.00% |
Sales Revenue, Net | Geographic Concentration Risk | UNITED STATES |  |  |
Revenue from External Customer [Line Items] |  |  |
Concentration risk, percentage | 79.00% | 80.00% |
Sales Revenue, Net | Geographic Concentration Risk | UNITED KINGDOM |  |  |
Revenue from External Customer [Line Items] |  |  |
Concentration risk, percentage | 19.00% |  |
Sales Revenue, Net | Geographic Concentration Risk | SWITZERLAND |  |  |
Revenue from External Customer [Line Items] |  |  |
Concentration risk, percentage |  | 15.00% |

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