Income taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income taxes [Abstract]
Income tax (expense) benefit	$ 169	$ (62)	$ 1,189	$ (2,287)
Effective tax rate	15.70%	(13.30%)	19.80%	(27.00%)