Note 7 - Derivative Instruments - Schedule Outstanding Volumes (Details) - Energy Related Derivative [Member] - Forecast [Member] |
3 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
|
Mar. 31, 2028
MWh
BTU
|
Dec. 31, 2027
MWh
BTU
|
Sep. 30, 2027
MWh
BTU
|
Jun. 30, 2027
MWh
BTU
|
Mar. 31, 2027
MWh
BTU
|
Dec. 31, 2026
MWh
BTU
|
Sep. 30, 2026
MWh
BTU
|
|
| Electricity [Member] | |||||||
| Volume (Megawatt-Hour) | MWh | 0 | 0 | 3,440 | 0 | 6,400 | 1,240 | 8,960 |
| Oil and Gas [Member] | |||||||
| Volume (Megawatt-Hour) | BTU | 0 | 0 | 0 | 0 | 0 | 0 | 0 |