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Property and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Property and Equipment    
Property and equipment. gross $ 126 $ 126
Less: accumulated depreciation and amortization (126) (126)
Property and equipment, net 0 0
Property and Equipment    
Property and Equipment    
Depreciation and amortization 0 0
Software    
Property and Equipment    
Property and equipment. gross $ 126 $ 126