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Property, Plant, and Equipment and Other Assets (Details Narrative) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Sep. 30, 2019
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Depreciation expense   $ 190 $ 316 $ 379 $ 658  
Gain (loss) on disposition of property plant equipment   9 $ (288) 10 $ (258)  
Security deposit   3   3   $ 123
Office Lease [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Security deposit   $ 120   $ 120    
Electrical Contract [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Payments for deposit $ 120