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Fair Value of Financial Assets and Liabilities (Details) - USD ($)
3 Months Ended 12 Months Ended
Jan. 09, 2020
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Nov. 04, 2019
Nov. 01, 2019
Sep. 30, 2019
May 31, 2019
May 29, 2019
Feb. 15, 2019
May 07, 2018
Fair Value of Financial Assets and Liabilities (Details) [Line Items]                        
Exercise price per share (in Dollars per share)   $ 5.20   $ 5.20                
Exercise price percentage   80.00%   80.00%                
Exercisable price per share (in Dollars per share)   $ 5.787   $ 5.787                
Fair value of warrants   $ 36,505,000 $ 13,866,000 $ 58,686,000 $ 4,226,000              
Gx Acquisition Corp [Member]                        
Fair Value of Financial Assets and Liabilities (Details) [Line Items]                        
Exercisable price per share (in Dollars per share)   $ 0.01                    
Transfer Amount               $ 21,655,000        
Dragasac [Member]                        
Fair Value of Financial Assets and Liabilities (Details) [Line Items]                        
Fair value of warrants   $ 38,223,000                    
Series B Preferred Stock [Member]                        
Fair Value of Financial Assets and Liabilities (Details) [Line Items]                        
Fair value convertible preferred stock warrants   113,145,000   $ 76,640,000                
Exercisable price per share (in Dollars per share) $ 5.20         $ 5.2000 $ 5.2000   $ 5.6000 $ 5.6000 $ 5.7870 $ 5.7870
Fair value of warrants $ 11,988,000 $ 74,922,000