Summary of significant accounting policies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Summary of significant accounting policies
Other (income) expense, net	$ (208)	$ (47)	$ (432)	$ (158)
Interest expense	$ 854	$ 72	$ 2,088	$ 72