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Accounts Payable (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Accounts Payable [Line Items]    
Accounts payable, current $ 417 $ 100
Manufacturing Costs [Member]    
Accounts Payable [Line Items]    
Accounts payable, current 300  
Legal and Patent [Member]    
Accounts Payable [Line Items]    
Accounts payable, current $ 100 $ 100