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Segment Reporting (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Revenue $ 0 $ 0
Allocated employee compensation and stock-based compensation 2,000,000.0 1,300,000
CODM    
Revenue 0 0
General and administrative 8,500,000 7,100,000
INL Project 1,700,000 800,000
Romania feasibility study 200,000 0
Centrus Energy FEED study 300,000 0
Allocated employee compensation and stock-based compensation 1,800,000 700,000
Other outside R&D expenses 600,000 400,000
Total research and development 4,600,000 1,900,000
Other segments item (1) (1,300,000) (1,100,000)
Net loss $ (11,800,000) $ (7,900,000)