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STOCKHOLDERS' EQUITY - Warrants (Details)
 4 Months Ended
Dec. 31, 2020
D
item
$ / shares
Warrants  
Class of Warrant or Right [Line Items]  
Maximum period after business combination in which to file registration statement 20 days
Period of time within which registration statement is expected to become effective 60 days
Private Placement Warrants  
Class of Warrant or Right [Line Items]  
Restrictions on transfer period of time after business combination completion 30 days
Public Warrants  
Class of Warrant or Right [Line Items]  
Warrant exercise period condition one 30 days
Warrant exercise period condition two 1 year
Public Warrants expiration term 5 years
Warrant redemption condition minimum share price scenario two $ 18.00
Share price trigger used to measure dilution of warrant $ 9.20
Percentage of gross new proceeds to total equity proceeds used to measure dilution of warrant 60
Trading period after business combination used to measure dilution of warrant | D 20
Warrant exercise price adjustment multiple 115
Warrant redemption price adjustment multiple 100
Public Warrants | Redemption of Warrants When the Price per Class A Ordinary Share Equals or Exceeds $18.00  
Class of Warrant or Right [Line Items]  
Warrant redemption condition minimum share price $ 10.00
Warrant redemption condition minimum share price scenario two 18.00
Redemption price per public warrant (in dollars per share) $ 0.01
Threshold trading days for redemption of public warrants | item 20
Threshold consecutive trading days for redemption of public warrants | item 30
Threshold number of business days before sending notice of redemption to warrant holders | item 3
Redemption period 30 days
Warrant redemption price adjustment multiple 180
Public Warrants | Redemption of Warrants When the Price per Class A Ordinary Share Equals or Exceeds $10.00  
Class of Warrant or Right [Line Items]  
Warrant redemption condition minimum share price $ 10.00
Warrant redemption condition minimum share price scenario two 18.00
Redemption price per public warrant (in dollars per share) $ 0.10
Threshold trading days for redemption of public warrants | item 30
Redemption period 30 days
Founder Shares | Class B ordinary  
Class of Warrant or Right [Line Items]  
Percentage of issued and outstanding shares after the Initial Public Offering collectively held by initial stockholders 20.00%