v3.25.2
Asset Acquisition (Details)
 3 Months Ended 6 Months Ended
Apr. 01, 2024
USD ($)
director
item
$ / shares
shares
Jun. 30, 2024
USD ($)
shares
Jun. 30, 2024
USD ($)
shares
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Assets acquired:            
Cash and cash equivalents   $ 16,886,000 $ 16,886,000 $ 13,081,000 $ 21,338,000 $ 20,821,000
Total assets       15,622,000 24,962,000  
Liabilities assumed:            
Accrued expenses and other current liabilities       2,593,000 3,121,000  
Total liabilities       $ 7,360,000 $ 56,592,000  
Number of shares issued | shares   10,359 10,359      
Number of Contractual contingent value rights per shareholder | item 1          
Common Stock            
Liabilities assumed:            
Number of shares issued | shares   141,982 141,982      
Trawsfynydd IPR&D            
Consideration transferred:            
Assumed options $ 7,085,000          
Company transaction costs settled in equity 4,984,000          
Company transaction costs paid in cash 3,692,000          
Total consideration transferred 112,543,000          
Assets acquired:            
Cash and cash equivalents 44,000          
Total assets 44,000          
Liabilities assumed:            
Accrued expenses and other current liabilities 4,965,000          
Total liabilities 4,965,000          
Net assets acquired (4,921,000)          
In-process research and development 117,464,000          
Net assets acquired $ 112,543,000          
Price per share (in dollars per share) | $ / shares $ 1          
Percentage of discount on share price 10.00%          
Transaction costs $ 8,676,000          
Number of directors appointed | director 3          
Trawsfynydd IPR&D | Series C Preferred            
Consideration transferred:            
Consideration transferred $ 93,232,000          
Liabilities assumed:            
Number of shares issued | shares 10,359          
Shares issuable upon conversion | shares 400          
Trawsfynydd IPR&D | Series C Preferred | Tungsten            
Liabilities assumed:            
Number of shares issued | shares 535          
Trawsfynydd IPR&D | Common Stock            
Consideration transferred:            
Consideration transferred $ 3,550,000          
Liabilities assumed:            
Number of shares issued | shares 141,982          
Trawsfynydd IPR&D | Common Stock | Tungsten            
Liabilities assumed:            
Number of shares issued | shares 6,747