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Note 12 - Leases (Details Textual) |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Feb. 29, 2016 USD ($) a | Dec. 31, 2024 USD ($) | Feb. 01, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Operating Lease, Right-of-Use Asset |  | $ 3,746,000 |  | $ 431,000 | $ 431,000
Lessee, Operating Lease, Liability, to be Paid |  | 7,547,000 |  |  |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount |  | $ 3,760,000 |  |  |
Operating Lease, Weighted Average Discount Rate, Percent |  | 11.00% |  |  |
Operating Lease, Weighted Average Remaining Lease Term (Year) |  | 16 years |  |  |
Operating Lease, Cost |  | $ 401,000 |  |  |
Operating Lease, Liability |  | $ 3,787,000 |  |  |
Minimum [Member] |  |  |  |  |
Lessee, Operating Lease, Remaining Lease Term (Month) |  | 22 months |  |  |
Maximum [Member] |  |  |  |  |
Lessee, Operating Lease, Remaining Lease Term (Month) |  | 25 years |  |  |
Northern Pipeline Agreement [Member] |  |  |  |  |
Lessor, Operating Lease, Term of Contract (Year) |  |  | 26 years |  |
Operating Lease, Right-of-Use Asset |  |  | $ 1,900,000 |  |
Lessee, Operating Lease, Liability, to be Paid |  |  | 4,800,000 |  |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount |  |  | $ 2,900,000 |  |
Operating Lease, Weighted Average Discount Rate, Percent |  |  | 10.00% |  |
Operating Lease, Annual Rent Payments |  |  | $ 185,000 |  |
Corporate Office Lease Agreement [Member] |  |  |  |  |
Operating Lease, Right-of-Use Asset |  | $ 1,600,000 |  |  |
Lessee, Operating Lease, Liability, to be Paid |  | 2,600,000 |  |  |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount |  | $ 1,000,000 |  |  |
Operating Lease, Weighted Average Discount Rate, Percent |  | 12.00% |  |  |
Operating Lease, Weighted Average Remaining Lease Term (Year) |  | 10 years |  |  |
Operating Lease, Liability |  | $ 1,600,000 |  |  |
Fenner Valley Farms LLC Lease Agreement [Member] |  |  |  |  |
Lessor, Operating Lease, Term of Contract (Year) | 99 years |  |  |  |
Area of Real Estate Property (Acre) | a | 2,100 |  |  |  |
Long-term Debt, Total | $ 12,000,000 |  |  |  |
Lessor, Operating Lease, Payment to be Received, Year One |  | 420,000 |  |  |
Lessor, Operating Lease, Payment to be Received, Year Two |  | 420,000 |  |  |
Lessor, Operating Lease, Payment to be Received, Year Three |  | 420,000 |  |  |
Lessor, Operating Lease, Payment to be Received, Year Four |  | 420,000 |  |  |
Lessor, Operating Lease, Payment to be Received, Year Five |  | $ 420,000 |  |  |

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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lease payment to be received by lessor for operating lease in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479773/842-30-50-12 + Details
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