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Revenue - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jan. 31, 2022 | Jan. 31, 2021 | Jan. 31, 2020
Disaggregation of Revenue [Line Items] |  |  |
Deferred revenue, revenue recognized | $ 55,200 | $ 34,700 | $ 35,100
Remaining performance obligation, amount | 153,400 |  |
Deferred revenue | 67,800 |  |
Non-cancelable contract revenue | 85,600 |  |
Deferred commission expense | 1,700 | 3,000 | 300
Amortization of deferred commission | $ 2,000 | $ 1,900 | $ 1,300
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-02-01 | Minimum |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Remaining performance obligation, percentage | 72.00% |  |
Remaining performance obligation, expected timing of satisfaction | 12 months |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-02-01 | Maximum |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Remaining performance obligation, percentage | 96.00% |  |
Remaining performance obligation, expected timing of satisfaction | 24 months |  |

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130532-203044 + Details
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