Registration of securities issued in business combination transactions

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Warrant Liabilities (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Warrant Liabilities (Details) - $ / shares
 4 Months Ended 6 Months Ended
Dec. 07, 2020
Dec. 31, 2020
Jun. 30, 2021
Subsidiary, Sale of Stock [Line Items]      
Price per share     $ 10.00
Number of shares issuable per warrant     1
Stock price trigger for redemption of public warrants (in dollars per share)     $ 18.00
Redemption of Warrants When the Price per Share of Class A Common Stock Equals or Exceeds $18.00      
Subsidiary, Sale of Stock [Line Items]      
Stock price trigger for redemption of public warrants (in dollars per share)   $ 18.00  
Initial Public Offering      
Subsidiary, Sale of Stock [Line Items]      
Sale of units (in shares) 34,500,000   34,500,000
Price per share $ 10.00   $ 10.00
Number of shares in a unit 1   1
Number of warrants in a unit 0.25 0.25 0.25
Number of shares issuable per warrant 1   1
Exercise price of warrants $ 11.50   $ 11.50
Over-allotment      
Subsidiary, Sale of Stock [Line Items]      
Sale of units (in shares) 4,500,000   4,500,000
Public Warrants      
Subsidiary, Sale of Stock [Line Items]      
Number of warrants issued     8,625,000
Number of shares issuable per warrant     1
Exercise price of warrants     $ 11.50
Public Warrants | Redemption of Warrants When the Price per Share of Class A Common Stock Equals or Exceeds $18.00      
Subsidiary, Sale of Stock [Line Items]      
Stock price trigger for redemption of public warrants (in dollars per share)     $ 18.00
Public Warrants | Initial Public Offering      
Subsidiary, Sale of Stock [Line Items]      
Number of warrants issued 8,625,000    
Exercise price of warrants $ 11.50    
Private Placement Warrants      
Subsidiary, Sale of Stock [Line Items]      
Number of warrants issued     4,450,000
Number of shares issuable per warrant     1
Price of warrants   $ 2.00 $ 2.00
Exercise price of warrants   $ 11.50 $ 11.50
Private Placement Warrants | Over-allotment      
Subsidiary, Sale of Stock [Line Items]      
Sale of units (in shares) 4,450,000