Fair value measurements and investments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Monte Carlo Simulation Valuation Model
Liabilities
Undiscounted maximum payment under the contingent consideration arrangements	$ 1,000
Fair Value, Measurements, Recurring | Level 1
Liabilities
Derivative liability	0	$ 0
Total	20,240	0
Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury securities | Short-Term Investments
Assets
Derivative asset	20,240
Fair Value, Measurements, Recurring | Level 2
Liabilities
Derivative liability	0	0
Total	0	0
Fair Value, Measurements, Recurring | Level 2 | U.S. Treasury securities | Short-Term Investments
Assets
Derivative asset	0
Fair Value, Measurements, Recurring | Level 3
Liabilities
Derivative liability	1,043	1,043
Total	1,043	$ 1,043
Fair Value, Measurements, Recurring | Level 3 | U.S. Treasury securities | Short-Term Investments
Assets
Derivative asset	$ 0