Stock warrants - Additional Information (Details) - Common stock - $ / shares |
Nov. 06, 2020 |
Jan. 31, 2021 |
Jan. 31, 2020 |
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| Class of Warrant or Right [Line Items] | |||
| Number of warrants (in shares) | 0 | 75,137 | |
| Exercise price (in USD per share) | $ 8.02 | ||
| Common stock issued upon the exercise of warrants (in shares) | 60,338 |
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- Definition Exercise price per share or per unit of warrants or rights outstanding. 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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- Definition Number of warrants or rights outstanding. No definition available.
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- Definition The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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