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Share capital, share premium and other capital reserves - Common shares (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of classes of share capital [line items] |  |  |
Proceeds from issue of ordinary shares |  | $ 94,189 |
Issuance of VUmc common stock (in shares) | 491,352 | 235,664 |
Shares issued upon exercise of options | 22,197 |  |
Amount of increase (decrease) in lieu of equity license liability |  | $ 3,700 |
Percentage payable in lieu of equity license liability | 50.00% |  |
Common share |  |  |
Disclosure of classes of share capital [line items] |  |  |
Par value per share | $ 0.14 | $ 0.14 | $ 0.01
IPO |  |  |
Disclosure of classes of share capital [line items] |  |  |
Share issue related cost |  | $ 11,500 |
IPO | Common share |  |  |
Disclosure of classes of share capital [line items] |  |  |
Number of shares issued and sold |  | 6,700,000 |
Par value per share |  | $ 0.14 |
Issue price |  | $ 15.00 |
Proceeds from issue of ordinary shares |  | $ 89,000 |
Underwriters discount and commission |  | 7,000 |
Share issue related cost |  | $ 4,500 |
Over-Allotment Option | Common share |  |  |
Disclosure of classes of share capital [line items] |  |  |
Number of shares issued and sold |  | 425,712 |
Issue price |  | $ 15.00 |
Proceeds from issue of ordinary shares |  | $ 5,900 |
Underwriters discount and commission |  | $ 400 |

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