Nature of business and basis of presentation (Details) - USD ($)		12 Months Ended
	Jan. 28, 2026	Dec. 31, 2025	Dec. 31, 2024
Nature of business and basis of presentation
Cash balance		$ 14,599,347	$ 22,849,885
Common stock issuance costs		$ 407,459	$ 1,318,461
January 2026 Private Placement | Subsequent Event
Nature of business and basis of presentation
Issuance of gross proceeds	$ 5,600,000
Common stock issuance costs	$ 400,000