Commitments and contingencies - Summary of maturity of lease liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Operating leases
2024	$ 4,565
2025	4,078
2026	3,245
2027	2,619
2028	1,497
Thereafter	0
Total undiscounted cash flows	16,004
Less imputed interest	(1,374)
Present value of future lease payments	14,630	$ 17,907
Finance Leases
2024	1,623
2025	1,617
2026	1,630
2027	1,662
2028	1,696
Thereafter	7,753
Total undiscounted cash flows	15,981
Less imputed interest	(4,836)
Present value of future lease payments	$ 11,145	$ 131