Note 10 - AROs (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2026 |
Dec. 31, 2025 |
Oct. 31, 2025 |
Dec. 31, 2024 |
|
| Asset Retirement Obligation | $ 5,156 | $ 5,156 | $ 6,025 | $ 3,000 | $ 2,999 |
| Asset Retirement Obligation, Revision of Estimate | 0 | 3,026 | |||
| Asset Retirement Obligation, Liabilities Settled | 900 | 869 | (0) | ||
| Blue Dolphin Pipe Line Company (BDPL) [Member] | |||||
| Asset Retirement Obligation | $ 5,200 | $ 5,200 | 6,000 | ||
| Asset Retirement Obligation, Period Increase (Decrease) | 3,000 | ||||
| Asset Retirement Obligation, Revision of Estimate | $ 3,000 |