Registration of securities issued in business combination transactions

Operations And Organization (Details)

v3.20.2
Operations And Organization (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Operations And Organization [Abstract]      
Cash, cash equivalents and marketable securities $ 9,200,000 $ 12,200,000  
Accumulated deficit $ 166,420,604 $ 163,322,676 $ 154,687,242