Income taxes - Schedule of income before provision for income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ (11,530)	$ (18,084)	$ 13,486
International	9,078	2,872	1,963
Income/(loss) before income taxes	$ (2,452)	$ (15,212)	$ 15,449