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Condensed Consolidated Balance Sheets (Parenthetical) (unaudited) - $ / shares
Jun. 30, 2021
Dec. 31, 2020
Statement Of Financial Position [Abstract]    
Preferred stock, par value $ 0.0001 $ 0.0001
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.0001 $ 0.0001
Common stock, shares authorized 300,000,000 300,000,000
Common stock, shares issued 62,323,000 52,117,000
Common stock, shares outstanding 61,666,000 51,221,000