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Summary of Significant Accounting Policies - Preferred Stock Discount (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Feb. 28, 2021
Mar. 31, 2022
Mar. 31, 2021
Preferred stock discount      
Beneficial conversion feature     $ 19,565
Private Placement | Series X redeemable convertible preferred stock      
Preferred stock discount      
Beneficial conversion feature $ 19,600    
Issuance costs $ 5,700    
Non-cash dividend   $ 24,400  
Value of remaining shares not yet converted   $ 900