v3.25.1
Nature of Operations and Organization (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2025
USD ($)
MWd
Mar. 31, 2024
USD ($)
Feb. 28, 2025
Dec. 31, 2024
USD ($)
Business Acquisition [Line Items]        
Powerhouse production capability, nuclear fuel | MWd 15      
Powerhouse production capability, fresh fuel | MWd 75      
Powerhouse useful life 30 years      
Cash, cash equivalents, and marketable securities $ 260,688      
Net loss (9,810) $ (24,022)    
Operating loss 17,874 7,370    
Net cash provided by (used in) operating activities (12,243) $ (7,287)    
Accumulated deficit $ (144,919)     $ (135,109)
Atomic Alchemy, Inc.        
Business Acquisition [Line Items]        
Percentage of voting interests acquired     100.00%