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Goodwill and Intangible Assets - Schedule of acquired intangible assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross	$ 17,864	$ 14,582
Accumulated amortization and impairment charges	(17,864)	(14,582)
Net	$ 0	0
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]	Impairment of intangible assets
Software | Utrophin program
Finite-Lived Intangible Assets [Line Items]
Gross	$ 4,015	0
Accumulated amortization and impairment charges	(4,015)	0
Net	0	0
Software | Discuva platform
Finite-Lived Intangible Assets [Line Items]
Gross	12,900	13,583
Accumulated amortization and impairment charges	(12,900)	(13,583)
Net	0	0
Impairment charge	8,468
Option over non-financial asset
Finite-Lived Intangible Assets [Line Items]
Gross	816	859
Accumulated amortization and impairment charges	(816)	(859)
Net	0	0
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Gross	133	140
Accumulated amortization and impairment charges	(133)	(140)
Net	$ 0	$ 0

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