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Property and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Property and Equipment    
Property and equipment, gross $ 1,186 $ 1,015
Less: Accumulated depreciation (953) (870)
Property and equipment, net 233 145
Depreciation 83 93
Amortization 2 38
Equipment    
Property and Equipment    
Property and equipment, gross 1,057 1,014
Furniture and fixtures    
Property and Equipment    
Property and equipment, gross $ 129 $ 1