Note 6 - Formation of EverOn Energy Joint Venture and Consolidation of Variable Interest Entity - Pro Forma Information (Details) - EverOn Energy LLC [Member] - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Pro forma revenues	$ 0	$ 93	$ 0	$ 280
*Pro forma net income (loss)	$ (10,355)	$ (5,551)	$ (6,263)	$ (19,649)

Amount, after tax, of pro forma income (loss) of combined entity as if acquisition date of business combination occurred as of beginning of period.

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