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Note 8 - Leases (Details Textual) - USD ($) | 2 Months Ended | 3 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 28, 2026 | Mar. 31, 2026 | Mar. 31, 2025 | Mar. 11, 2026 | Mar. 01, 2026 | Jan. 06, 2026 | Dec. 31, 2025 | Nov. 01, 2025 | Jul. 01, 2024
Finance Lease, Liability |  | $ 18,927 |  |  |  |  |  |  |
Operating Lease, Liability |  | $ 19,441,233 |  |  | $ 238,379 |  |  |  |
Operating Lease, Expense |  |  | $ 217,875 |  |  |  |  |  |
Operating Lease, Weighted Average Remaining Lease Term (Year) |  | 22 years 11 months 23 days |  |  |  |  | 10 years 4 months 2 days |  |
Operating Lease, Right-of-Use Asset |  | $ 18,152,226 |  |  |  |  | $ 17,704,775 |  |
Finance Lease, Right-of-Use Asset, after Accumulated Amortization |  | 18,927 |  |  |  |  | $ 836,921 |  |
Navitas Equipment Lease Agreement [Member] |  |  |  |  |  |  |  |  |
Lessee, Finance Lease, Term of Contract (Month) |  |  |  | 55 months |  |  |  |  |
Lessee, Finance Lease, Monthly Rent Expense |  |  |  | $ 756 |  |  |  |  |
Finance Lease, Liability |  | $ 19,053 |  |  |  |  |  |  |
Lessee, Finance Lease, Discount Rate |  | 39.63% |  |  |  |  |  |  |
Finance Lease, Expense |  | $ 756 |  |  |  |  |  |  |
Finance Lease, Right-of-Use Asset, after Accumulated Amortization |  | 19,053 |  |  |  |  |  |  |
Industrial and Commercial Lease [Member] |  |  |  |  |  |  |  |  |
Lessee, Operating Lease, Monthly Rent Expense |  | 17,500 |  |  |  |  |  |  |
Operating Lease, Liability |  | 19,449 |  |  |  |  |  |  |
Operating Lease, Expense |  | 57,021 |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset |  | 19,053 |  |  |  |  |  |  |
Cambridge Land and Premises Lease [Member] |  |  |  |  |  |  |  |  |
Lessee, Operating Lease, Monthly Rent Expense |  |  |  |  |  | $ 12,500 |  |  |
Operating Lease, Liability |  |  |  |  |  | $ 523,890 |  |  |
Operating Lease, Expense |  | 36,290 |  |  |  |  |  |  |
Lessee, Operating Lease, Term of Contract (Month) |  |  |  |  |  | 60 months |  |  |
Lessee, Operating Lease, Discount Rate |  |  |  |  |  | 14.08% |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  |  | $ 523,890 |  |  |
Hydrotreating Equipment Lease [Member] |  |  |  |  |  |  |  |  |
Lessee, Operating Lease, Monthly Rent Expense |  |  |  |  | $ 6,178 |  |  |  |
Operating Lease, Expense |  | 6,178 |  |  |  |  |  |  |
Lessee, Operating Lease, Term of Contract (Month) |  |  |  |  | 5 years |  |  |  |
Lessee, Operating Lease, Discount Rate |  |  |  |  | 2.12% |  |  |  |
Operating Lease, Weighted Average Remaining Lease Term (Year) |  |  |  |  | 3 years 3 months 18 days |  |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  | $ 238,379 |  |  |  |
Property at 700 Lake Avenue [Member] |  |  |  |  |  |  |  |  |
Operating Lease, Expense |  | 14,908 | $ 14,908 |  |  |  |  |  |
Property at 600 Lake Avenue [Member] |  |  |  |  |  |  |  |  |
Lessee, Operating Lease, Monthly Rent Expense |  |  |  |  |  |  |  |  | $ 30,000
Operating Lease, Expense |  | 215,254 |  |  |  |  |  |  |
Operating Lease, Right-of-use Asset, Increase (Decrease) | $ (73,792) |  |  |  |  |  |  |  |
Operating Lease, Lease Liability, Increase (Decrease) | $ (73,792) |  |  |  |  |  |  |  |
Property at 800 Lake Avenue [Member] |  |  |  |  |  |  |  |  |
Lessee, Operating Lease, Monthly Rent Expense |  |  |  |  |  |  |  | $ 5,000 |
Operating Lease, Expense |  | 14,212 |  |  |  |  |  |  |
Operating Lease, Right-of-use Asset, Increase (Decrease) |  | (28,116) |  |  |  |  |  |  |
Operating Lease, Lease Liability, Increase (Decrease) |  | $ (28,116) |  |  |  |  |  |  |

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