Revenue - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | |
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Jul. 31, 2021 |
Jul. 31, 2020 |
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| Disaggregation of Revenue [Line Items] | Ìý | Ìý |
| Total revenue earned, deferred revenue | $ 6.8 | $ 3.7 |
| Revenue Benchmark | Non-US | Customer Concentration Risk | Ìý | Ìý |
| Disaggregation of Revenue [Line Items] | Ìý | Ìý |
| Percentage of revenues from students outside the United States | 1.00% | 1.00% |
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- Definition Contract with Customer, Liability, Deferred Revenue Recognized No definition available.
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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