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Liquidity and Capital Resources (Details) - USD ($)
$ in Thousands
9 Months Ended
Jul. 21, 2021
Sep. 30, 2021
Dec. 31, 2020
Debt Conversion [Line Items]      
Going concern period   1 year  
Accumulated deficit   $ 2,823,345 $ 2,391,139
Gross proceeds $ 990,983    
Payment for transaction costs 84,278    
Settlement for certain liabilities 139,557    
Net proceeds from ongoing business operations $ 767,148    
Affiliated Entity | Related party notes payable      
Debt Conversion [Line Items]      
Principal amounts in default   $ 9,252