Fair value measurements (Tables)

12 Months Ended

Dec. 31, 2025

Fair Value Disclosures [Abstract]

Schedule of financial assets and liabilities that measured at fair value on a recurring basis [Table Text Block]

		December 31, 2025
		Level 1		Level 2		Level 3		Total
Current assets:
Cash and cash equivalents	$	8,705,218	$	-	$	-	$	8,705,218
Total assets measured at fair value	$	8,705,218	$	-	$	-	$	8,705,218
		December 31, 2024
		Level 1		Level 2		Level 3		Total
Current assets:
Cash and cash equivalents	$	4,164,323	$	-	$	-	$	4,164,323
Total assets measured at fair value	$	4,164,323	$	-	$	-	$	4,164,323