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SHAREHOLDERS' EQUITY - Ordinary Shares (Details)
Sep. 30, 2021
Vote
$ / shares
shares
Dec. 31, 2020
$ / shares
shares
Mar. 31, 2020
shares
Mar. 02, 2020
shares
Class A ordinary shares        
Class of Stock [Line Items]        
Common shares, shares authorized (in shares) 400,000,000 400,000,000    
Common shares, par value (in dollars per share) | $ / shares $ 0.0001 $ 0.0001    
Common shares, votes per share | Vote 1      
Common shares, shares issued (in shares) 0 0    
Common shares, shares outstanding (in shares) 0 0    
Temporary Equity, Shares Outstanding 51,750,000 51,750,000 51,750,000 51,750,000
Class B ordinary shares        
Class of Stock [Line Items]        
Common shares, shares authorized (in shares) 40,000,000 40,000,000    
Common shares, par value (in dollars per share) | $ / shares $ 0.0001 $ 0.0001    
Common shares, votes per share | Vote 1      
Common shares, shares issued (in shares) 12,937,500 12,937,500    
Common shares, shares outstanding (in shares) 12,937,500 12,937,500    
Threshold conversion ratio of stock 20.00%