Note 10 - Commitments and Contingencies (Details Textual) |
26 Months Ended | |
|---|---|---|
|
Jun. 30, 2026
USD ($)
bbl
|
Dec. 31, 2025
USD ($)
|
|
| Operating Lease, Right-of-Use Asset | $ 499,000 | $ 957,000,000,000 |
| Operating Lease, Liability | 523,000 | 987,000,000,000 |
| Operating Lease, Liability, Current | 448,000 | 845,000 |
| Operating Lease, Liability, Noncurrent | 75,000 | $ 142,000 |
| Letters of Credit Outstanding, Amount | 4,600,000 | |
| Crude Oil Delivery Commitments [Member] | ||
| Supply Commitment, Minimum Volume Commitment | $ 138,700,000 | |
| Supply Commitment, Gross Barrels of Oil Delivered Per Day, Remaining Term of Contract | bbl | 23,500 | |
| Number of Barrels, Delivered | bbl | 32,022 | |
| Supply Commitment, Amount Committed | $ 107,700,000 |