Income taxes, Deferred Tax Asset Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income taxes [Abstract]
Valuation allowance, Beginning balance	$ (86,436)	$ (87,867)
Decrease (Increase) in valuation allowance through net loss	7,573	(7,680)
Foreign currency translation adjustments	(4,263)	9,111
Valuation allowance, Ending balance	$ (83,126)	$ (86,436)