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Deerfield warrants - Narrative (Details) - Deerfield Warrants - USD ($)		3 Months Ended		9 Months Ended
	Aug. 15, 2022	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Class of Warrant or Right [Line Items]
Debt conversion, warrants issued (in shares)	4,412,840
Deerfield warrant obligation, change in fair value income		$ 0	$ (1,130,000)	$ 0	$ 292,000
Deerfield obligation, fair value						$ 0
Warrants, Tranche One
Class of Warrant or Right [Line Items]
Debt conversion, warrants issued (in shares)	2,631,578
Warrant exercise price (in dollars per share)	$ 24.70
Warrants, Tranche Two
Class of Warrant or Right [Line Items]
Debt conversion, warrants issued (in shares)	1,781,262
Warrant exercise price (in dollars per share)	$ 28.07

X

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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The number of warrants issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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Amount of expense (income) related to adjustment to fair value of warrant liability.

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Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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