Subsequent events (Narrative) (Details) - USD ($)		1 Months Ended	9 Months Ended
	Oct. 12, 2026	Nov. 03, 2026	Sep. 30, 2026	Sep. 30, 2025
Subsequent Event [Line Items]
Proceeds from common shares			$ 0	$ 9,790,015
ATM Agreement [Member]
Subsequent Event [Line Items]
Common shares issued			1,035,449
Proceeds from common shares			$ 17,770,248
Subsequent Event [Member]
Subsequent Event [Line Items]
Applicable share consolidation ratio	50 to 1
Subsequent Event [Member] | ATM Agreement [Member]
Subsequent Event [Line Items]
Common shares issued		41,200
Proceeds from common shares		$ 240,013
Proceeds from common shares net of commissions payable to Agents		$ 232,812