Note 9 - Leases - Operating Lease Balance Sheet Information (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
|
| Total lease cost | $ 18,191 | $ 6,979 | $ 39,996 | $ 20,937 | |
| Operating lease right-of-use assets | 132,603 | 132,603 | $ 47,953 | ||
| Operating lease liabilities, current portion | 67,735 | 67,735 | 27,728 | ||
| Operating lease liabilities, non-current portion | 65,864 | 65,864 | 21,266 | ||
| Total operating lease liabilities | $ 133,599 | $ 133,599 | $ 48,994 | ||
| Weighted average remaining lease term (in years) – operating leases (Year) | 1 year 10 months 20 days | 1 year 10 months 20 days | 1 year 11 months 1 day | ||
| Weighted average discount rate – operating leases | 5.50% | 5.50% | 5.50% | ||
| Cash paid for amounts included in the measurement of operating lease liabilities for the nine months ended September 30, 2026 and 2025: | $ 39,996 | $ 35,397 | |||