Note 8 - Goodwill and Other Intangibles - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Balance	$ 12,749	$ 9,998
Consolidation of Roded		2,660
Cumulative translation adjustment	229	91
Balance	12,978	12,749
Genie Retail Energy (“GRE”) [Member]
Balance	9,998	9,998
Consolidation of Roded		0
Cumulative translation adjustment	0	0
Balance	9,998	9,998
Genie Renewables (GREW) [Member]
Balance	2,751	0
Consolidation of Roded		2,660
Cumulative translation adjustment	229	91
Balance	$ 2,980	$ 2,751

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details