Financial instruments and fair value measurements - Inputs In Contingent consideration (Details) $ in Thousands	Jun. 30, 2025 USD ($) Y $ / shares	Dec. 31, 2024 USD ($) Y $ / shares
Probability adjusted value of payments | Gadeta Earnout
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, Measurement input | $	1,060	1,060
Probability adjusted value of payments | Clade Milestone
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, Measurement input | $	9,000	9,000
Discount rate | Gadeta Earnout
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, Measurement input	0.124	0.124
Discount rate | Clade Milestone
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, Measurement input	0.10	0.103
Discount period (years) | Gadeta Earnout
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, Measurement input | Y	7.6	8.1
Discount period (years) | Clade Milestone
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, Measurement input | Y	1.1	1.6
Closing stock price on valuation date | Holdback Shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, Measurement input | $ / shares	0.56	1.01
Discount for lack of marketability | Holdback Shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration liability, Measurement input	(0.001)	(0.0022)