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Restricted Cash (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 02, 2019
Dec. 02, 2018
Short-term restricted cash   $ 50    
Early lease termination payment $ 200 (9)    
Restricted Stock Units [Member]          
Deposit   250      
Short-term restricted cash   $ 50      
Avidbank [Member]          
Line of credit facility       $ 200 $ 250
Reduction in line of credit facility       $ 50