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Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Intangible assets:    
Gross Carrying Amount $ 1,285 $ 1,159
Accumulated Amortization $ (56) (51)
Minimum    
Intangible assets:    
Estimated useful life of intangible assets 3 years  
Maximum    
Intangible assets:    
Estimated useful life of intangible assets 20 years  
Licenses    
Intangible assets:    
Gross Carrying Amount $ 149 149
Accumulated Amortization (54) (51)
Patents    
Intangible assets:    
Gross Carrying Amount 72  
Accumulated Amortization (2)  
Patents pending    
Intangible assets:    
Gross Carrying Amount 1,038 984
Trademarks    
Intangible assets:    
Gross Carrying Amount 9 9
Trademarks pending    
Intangible assets:    
Gross Carrying Amount $ 17 $ 17