Stockholders' Equity - Restricted Stock (Details) - Restricted Stock - USD ($) |
Apr. 30, 2022 |
Apr. 30, 2021 |
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| Stockholders Equity [Line Items] | 听 | 听 |
| Unvested shares of restricted common stock outstanding (in shares) | 0 | 8,224 |
| Total unrecognized compensation expense | $ 0 | 听 |
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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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- Definition Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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