Discontinued operations - Mexico project development - Financial Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations	$ (502,854)	$ (232,994)
Gain on sale of land and project documentation			$ 12,134,766
Discontinued Operations. | Mexico Project Development
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations			(1,496,840)	$ (699,858)
Gain on sale of land and project documentation			$ 12,134,766