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Condensed Consolidated Statements of Operations - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Condensed Consolidated Statements of Operations        
Revenues $ 0 $ 0 $ 0 $ 363
Cost of goods sold   505   730
Gross loss   (505)   (367)
Operating expenses:        
Research and development 188 472 296 1,298
General and administrative 1,472 1,565 2,881 2,898
Total operating expenses 1,660 2,037 3,177 4,196
Loss from operations (1,660) (2,542) (3,177) (4,563)
Other income        
Gain on forgiveness of debt   251   251
Gain from sale of assets 14   37  
Other income, net 8   12  
Total other income 22 251 49 251
Net loss (1,638) (2,291) (3,128) (4,312)
Net loss attributed to non-controlling interest   1    
Net Loss $ (1,638) $ (2,290) $ (3,128) $ (4,312)
Net loss per share - basic $ (0.05) $ (0.07) $ (0.09) $ (0.14)
Net loss per share - fully diluted $ (0.05) $ (0.07) $ (0.09) $ (0.14)
Weighted average number of shares outstanding - basic 33,541,408 31,314,816 33,378,054 30,922,871
Weighted average number of shares outstanding - fully diluted 33,541,408 31,314,816 33,378,054 30,922,871