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Stock-based compensation - Preferred Stock Warrants (Details) - Preferred stock warrants - $ / shares | Jun. 30, 2022 | Nov. 30, 2020
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Class of Warrant or Right [Line Items] |  |
Number of warrants outstanding (in shares) | 3,247,637 |
Weighted average exercise price (in usd per share) |  | $ 1.92
Number exercisable (in shares) | 1,299,055 |
Weighted average |  |
Class of Warrant or Right [Line Items] |  |
Weighted average exercise price (in usd per share) | $ 1.92 |

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- Definition Class Of Warrant Or Right, Exercisable + References No definition available. + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
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- Details
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