Warrants - Warrants outstanding and exercisable (Details) - shares	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Warrants
Warrants outstanding, beginning balance	3,045	8,073
Issuances	2,575,374	0
Exercises	0	(5,026)
Expirations and cancelations		(2)
Warrants outstanding, ending balance	2,578,419	3,045