Long-term debt - Narrative (Details) - USD ($) $ in Thousands	Sep. 20, 2022	Dec. 31, 2025	Nov. 11, 2024	Apr. 17, 2024
The 2023 Term Loan
Debt Instrument [Line Items]
Term loan agreement	$ 60,000
Agreement provides for borrowings	30,000
Options to borrow	10,000
Milestone achievements	10,000
Discretion of lender	10,000
Proceeds from debt	$ 20,000
Debt instrument, variable interest rate, type [extensible enumeration]	Prime Rate [Member]
Interest at a floating rate (in percent)	0.50%
Interest rate, maximum stated percentage for each tranche borrowed (in percent)	1.00%
Debt instrument, balloon payment due	$ 1,200
Interest rate (in percent)		9.30%
Debt instrument, face amount		$ 6,100
Second Amendment Term Loan
Debt Instrument [Line Items]
Termination fee, amount			$ 750	$ 500