Income taxes - Summary of Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning of the year	$ 2,975	$ 968	$ 229
Increase related to current year tax positions	0	2,007	871
Increase related to prior year tax positions	0	0	0
Decrease for tax positions of prior years	(2,875)	0	(129)
Decrease due to expiration of statute of limitations	0	0	(3)
End of the year	$ 100	$ 2,975	$ 968