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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Preferred stock shares authorized   337,272,859
Preferred stock shares issued   212,642,857
Preferred stock shares outstanding 0 212,642,857
Common stock par value $ 0.001 $ 0.001
Common stock shares authorized 150,000,000 260,000,000
Common stock shares issued 89,991,324 4,716,634
Common stock shares outstanding 89,906,835 4,037,476
Convertible Preferred Stock [Member]    
Temporary equity par value $ 0.001 $ 0.001
Temporary equity shares authorized 0 337,272,859
Temporary equity shares issued 0 212,642,857
Temporary equity shares outstanding 0 212,642,857
Temporary equity liquidation preference   $ 519,825
Undesignated Preferred Stock [Member]    
Preferred stock par value $ 0.001 $ 0.001
Preferred stock shares authorized 10,000,000 0
Preferred stock shares issued 0 0
Preferred stock shares outstanding 0 0