Income taxes - Summary of Valuation Allowance (Details) - Valuation Allowance of Deferred Tax Assets $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves
Balance at beginning of period	$ 274,343
Additions/(reductions) charged to expenses	18,347
Additions/(reductions) for acquisitions/dispositions	12,389
Other additions to (deductions from) reserves	0
Foreign currency translation	(5,020)
Balance at end of period	$ 300,059