Income taxes - Components of Income Taxes (Details) - USD ($)	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income taxes
Net loss	$ (112,662,027)	$ (37,127,303)	$ (53,478,812)
Foreign
Income taxes
Net loss	(6,377,901)	(13,229,828)	(27,215,385)
Federal
Income taxes
Net loss	$ (106,284,126)	$ (23,897,475)	$ (26,263,427)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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