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Notes Payable - Schedule of Derivative Liability Fair Value (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Derivative liability $ 313 $ 246
Fair Value, Inputs, Level 1 [Member]      
Derivative liability  
Fair Value, Inputs, Level 2 [Member]      
Derivative liability  
Fair Value, Inputs, Level 3 [Member]      
Derivative liability $ 313 $ 246