Nature of the business - Merger Agreement (Details) - USD ($) $ / shares in Units, $ in Thousands		6 Months Ended
Jun. 29, 2023	Jun. 30, 2023
Issuance of common stock		$ 221
Options, exercisable		1,563,646
Morphimmune Inc
Ownership percentage	55.00%
Morphimmune Inc \| Morphimmune Inc
Minority interest	45.00%
Subscription Agreements \| PIPE Investors
Issuance of common stock ( in shares)	21,690,871
Issuance of common stock	$ 125,000
Share price per share	$ 5.91
Subscription Agreements \| PIPE Investors \| Affiliated
Share price per share	$ 5.75

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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