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Geographic and Segment Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenue $ 43,000 $ 420,000
Net Income (Loss) (11,212,000) (22,555,000)
Total Assets 4,094,000 8,805,000
Long Lived Assets, net 3,000 9,000
United States    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Income (Loss) (37,000) (808,000)
Total Assets 3,285,000 2,938,000
Long Lived Assets, net 1,000  
United Kingdom    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenue 43,000 420,000
Net Income (Loss) (11,175,000) (21,747,000)
Total Assets 809,000 5,867,000
Long Lived Assets, net $ 2,000 $ 9,000