Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Detail)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Detail) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Apr. 08, 2019
Apr. 30, 2019
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2020
Dec. 31, 2019
Initial Public Offering                          
Federal depository insurance coverage                       $ 250,000  
Shares subject to possible redemption     28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000
Temporary Equity, Redemption Price Per Share     $ 10.00 $ 10.00 $ 10.00 $ 10.00 $ 10.00 $ 10.00 $ 10.00 $ 10.00 $ 10.00 $ 10.00 $ 10.00
Total loss allocable to all shares                       $ (18,900,000) $ (27,200,000)
Remeasurement of ordinary shares subject to possible redemption                         $ 31,300,000
Basic and diluted weighted average shares outstanding of Founder Shares     7,187,500 7,187,500 7,187,500 7,187,500 7,187,500 7,187,500 7,187,500 7,187,500 7,187,500 7,187,500 7,187,500
Basic and diluted weighted average shares outstanding of Public Shares     28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000 28,750,000
Unrecognized tax benefits                       $ 0 $ 0
Accrual for interest and penalties                       $ 0 $ 0
IPO                          
Initial Public Offering                          
Shares subject to possible redemption                       28,750,000 28,750,000
Number of shares issued 28,750,000 28,750,000                      
Public Shares                          
Initial Public Offering                          
Income(loss) allocation ratio                       80.00% 80.00%
Founder Shares                          
Initial Public Offering                          
Income(loss) allocation ratio                       20.00% 20.00%
Ordinary Shares | IPO                          
Initial Public Offering                          
Number of shares issued                       28,750,000