Share capital (Schedule of assumptions used to estimate the fair value of warrants) (Details) - Regulation A Warrants [Member]	Dec. 05, 2025 Percentage USD_per_Share Year	Jul. 15, 2025 Percentage USD_per_Share Year	Jun. 02, 2025 Percentage USD_per_Share Year	Mar. 10, 2025 Percentage USD_per_Share Year	Dec. 31, 2024 Percentage USD_per_Share Year
Valuation date share price [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input | USD_per_Share	2.05	3.13	2.63	3.4	2.65
Exercise price [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input | USD_per_Share	2	3.75	3.1	2.8	4.64
Dividend yield [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0	0	0	0	0
Risk-free interest rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.0372	0.03995	0.0401	0.0398	0.0432
Expected warrant life [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input | Year	5.5	5	5	5	5
Expected volatility [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	87.31	73.19	97.42	97.81	95