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Business Description, Basis of Presentation and Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 78 Months Ended
Jan. 31, 2022
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Dec. 31, 2021
Loss Contingencies [Line Items]              
Cash and cash equivalents   $ 1,203   $ 1,203   $ 1,203 $ 1,071
Working capital   20,162   20,162   20,162  
Net cash used in operating activities       (2,692) $ 985    
Increase of cash used in operating activities       3,677      
Litigation settlement expense           $ 28,653  
Common stock and additional paid-in capital [Member]              
Loss Contingencies [Line Items]              
Issue of common stock and warrants $ 2,000 $ 0 $ 0 $ 2,000 $ 0