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Property, Plant, and Equipment and Other Assets (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Property, Plant and Equipment [Abstract]      
Depreciation expense $ 48 $ 189  
Gain on sale of property and equipment $ 1  
Security deposits $ 3   $ 3