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Fair Value Measurements - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 16, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Jan. 31, 2021
Class of Stock [Line Items]          
Cash and cash equivalents   $ 241,332 $ 262,728    
Change in fair value of common stock warrant liabilities   (87,922) 23,049 $ 0  
Shares in escrow (in shares) 10,000,000        
Fair value $ 172,300        
Shares to be released from escrow (in shares)         10,000,000
FEAC sponsor shares          
Class of Stock [Line Items]          
Shares in escrow (in shares) 5,000,000        
Shares to be released from escrow (in shares)         5,000,000
Common stock of FEAC          
Class of Stock [Line Items]          
Shares in escrow (in shares) 5,000,000        
Shares to be released from escrow (in shares)         5,000,000
Private Warrants          
Class of Stock [Line Items]          
Change in fair value of common stock warrant liabilities   $ 6,200 $ 53,700