Commitments and contingencies - Supplemental balance sheet information (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Operating lease assets
Operating lease assets	$ 13,353	$ 16,690
Operating lease liabilities- current	$ 4,057	$ 3,552
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Operating lease liabilities- noncurrent	$ 10,573	$ 14,355
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities	Other long-term liabilities
Total operating lease liabilities	$ 14,630	$ 17,907
Financing leases
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property and equipment, net	Property and equipment, net
Property, plant and equipment - net	$ 14,279	$ 128
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Finance lease liabilities - current	$ 759	$ 55
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities	Other long-term liabilities
Finance lease liabilities - noncurrent	$ 10,386	$ 76
Total financing lease liabilities	$ 11,145	$ 131
Operating lease, weighted average remaining lease term (years)	3 years 9 months 18 days	4 years 9 months 18 days
Finance leases, weighted average remaining lease term (years)	9 years 3 months 18 days	2 years 4 months 24 days
Weighted average discount rate for operating leases (in percent)	4.70%	4.80%
Weighted average discount rate, finance leases, (in percent)	8.10%	3.30%