Note 11 - Common Stock - Summary of Reserved Shares of Common Stock (Details) - shares	Sep. 30, 2025	Dec. 31, 2024
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	4,577,382	765,776
Common Stock from Warrants [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	1,055,809	707,234
Common Stock from Options [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	355,368	8,868
Common Stock from RSUs [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	79,415	44,119
Common Stock Available for Future Incentive Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	79,113	5,555
Common Stock Available for Conversion of Series A Preferred Stock [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	237,200	0
Common Stock Available for Conversion of Series B Preferred Stock [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	2,770,477	0