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Business combinations - Acquisition-related costs (Details) - TCR2 Therapeutics - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Merger with TCR2 Therapeutics Inc. |  |  |
Legal, professional and accounting fees | $ 3,323 |  | $ 5,174
Bankers' fees | 750 |  | 2,172
Total acquisition-related costs | 4,073 | $ 3,800 | $ 7,346
Issuance costs incurred relating to the issuance of shares to TCR2 stockholders | $ 0 |  |

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- Definition Amount of issuance costs incurred relating to the issuance of shares to acquiree's stockholders, to effect a business combination which costs have been expensed during the period. + References No definition available. + Details
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