Stock-based compensation (Schedule of assumptions used to estimate the fair value of options) (Details)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected dividend yield	0.00%	0.00%
Expected term (in years)	5 years	5 years
Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Risk-free interest rate	3.68%	2.95%
Expected volatility	87.31%	95.00%
Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Risk-free interest rate	4.02%	4.24%
Expected volatility	101.54%	100.00%