Note 10 - Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	6 Months Ended
Jun. 30, 2026 USD ($)
Balance	$ 12,978
Acquisition of Able Minds	575
Cumulative translation adjustment	345
Balance	13,898
Genie Retail Energy (“GRE”) [Member]
Balance	9,998
Acquisition of Able Minds	0
Cumulative translation adjustment	0
Balance	9,998
Genie Renewables (GREW) [Member]
Balance	2,980
Acquisition of Able Minds	575
Cumulative translation adjustment	345
Balance	$ 3,900

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