Other Financial Statement information - Narrative (Details) - USD ($) $ in Thousands	Aug. 03, 2024	Jun. 30, 2026	Dec. 31, 2025
Property, Plant, and Equipment [Line Items]
Other non-current liabilities		$ 8,000	$ 8,099
California Institute of Regenerative Medicine (“CIRM”) | Grant
Property, Plant, and Equipment [Line Items]
Award amount	$ 8,000
Government assistance, co-funding obligation, amount	$ 4,800
Government assistance, royalty and licensing expense, percentage of revenue (in percent)	0.10%
Government assistance, royalty and licensing expense, per funding received	$ 1,000
Grant transaction duration (in years)	10 years
Original grant amount multiplier	9
Threshold days for repayment	10 days
Government assistance, repayment, interest rate (in percent)	10.00%
Other non-current liabilities		$ 8,000	$ 8,000
California Institute of Regenerative Medicine (“CIRM”) | Grant | Minimum
Property, Plant, and Equipment [Line Items]
Government assistance, repayment (in percent)	80.00%
California Institute of Regenerative Medicine (“CIRM”) | Grant | Maximum
Property, Plant, and Equipment [Line Items]
Government assistance, repayment (in percent)	100.00%