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Other income (expense) - Schedule of Other, Net (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Debt Instrument [Line Items]
Cumulative catch-up adjustment, deferred royalty obligation	$ 321,000	$ 206,000	$ 517,000	$ 732,000
Exchange differences gain (loss)	338,000	21,000	(599,000)	(75,000)
R&D tax credit gain	266,000	267,000	1,028,000	834,000
Other, net	925,000	1,624,000	946,000	1,783,000
Deerfield Warrants
Debt Instrument [Line Items]
Deerfield warrant obligation, change in fair value income	$ 0	$ 1,130,000	$ 0	$ (292,000)

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