Note 10 - Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2025 USD ($)
Balance	$ 12,749
Cumulative translation adjustment	52
Balance	12,801
Genie Retail Energy (“GRE”) [Member]
Balance	9,998
Cumulative translation adjustment	0
Balance	9,998
Genie Renewables (GREW) [Member]
Balance	2,751
Cumulative translation adjustment	52
Balance	$ 2,803