Goodwill and Intangible assets - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill	$ 16,937,000	$ 16,937,000
Goodwill impairment loss	0	0	$ 0
Humabs
Schedule of Goodwill and Intangible Assets [Line Items]
IPR&D	6,500,000	6,500,000
Impairment of indefinite-lived intangible assets	$ 0	$ 14,600,000	$ 9,700,000
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]	Research and development	Research and development	Research and development
Research and Development Expense
Schedule of Goodwill and Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 400,000	$ 300,000	$ 500,000