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Stock compensation - Summary of Share-based Payment Arrangement, Expensed and Capitalized, Amount (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | $ 4,873 | $ 2,682 | $ 8,997 | $ 5,349
Employees [Member] |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | 4,261 | 2,597 | 8,132 | 4,921
Nonemployees [Member] |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | 612 | 85 | 865 | 428
Research and development [Member] |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | 1,899 | 1,231 | 3,627 | 2,365
General and administrative [Member] |  |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share-based Payment Arrangement, Expense | $ 2,974 | $ 1,451 | $ 5,370 | $ 2,984

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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