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Summary of Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2019
Summary of Significant Accounting Policies (Textual)      
Reserve net $ 101 $ 134  
Stock options and warrants [Member]      
Summary of Significant Accounting Policies (Textual)      
Outstanding stock options and warrants 7,309,998   5,320,162