Income taxes - Domestic and Foreign Components of Income (Loss) before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Domestic	$ (110,640)	$ (155,528)	$ (80,243)
Foreign	6,999	3,939	1,400
Net loss before taxes	$ (103,641)	$ (151,589)	$ (78,843)