Income taxes (Schedule of income before income tax, domestic and foreign) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Loss attributed to US foreign operations	$ (4,968,344)	$ (2,023,786)
Loss attributed to Canadian operations	(6,187,172)	(3,290,979)
Loss before income taxes	$ (11,155,516)	$ (5,314,765)