Share capital - Equity-Based Compensation Expenses Related to Company's Equity-Based Awards (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 106,955	$ 94,900	$ 75,721
Cost of revenues
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	4,690	3,471	2,221
Research, development and clinical studies
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	30,790	27,597	18,125
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	28,826	22,673	17,672
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 42,649	$ 41,159	$ 37,703