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Consolidated Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2020
Dec. 31, 2019
Statement Of Financial Position [Abstract]    
Common stock, par or stated value per share $ 0.0001 $ 0.0001
Common stock, shares authorized 200,000,000 200,000,000
Common stock, shares issued 26,553,957 15,312,381
Common stock, shares outstanding 26,553,886 15,312,167