Registration of securities issued in business combination transactions

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)

v3.20.4
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($)
6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2020
Dec. 31, 2019
Dec. 31, 2019
Cash Withdrawn From Trust Account $ 1,137,000 $ 430,250 $ 1,390,000 $ 1,390,000,000
Unrecognized Tax Benefits   $ 0    
Accrued Interest and Penalty     $ 0 $ 0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 66,673,530 66,563,478 66,619,951 66,619,951
Cash, FDIC Insured Amount   $ 250,000 $ 250,000 $ 250,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent       21.00%
Effective Income Tax Rate Reconciliation, Percent       21.00%
Maximum [Member]        
Effective Income Tax Rate Reconciliation, Tax Settlement, Percent   50.00%    
Minimum [Member]        
Effective Income Tax Rate Reconciliation, Tax Settlement, Percent   30.00%    
US Treasury Bill Securities [Member]        
Cash Withdrawn From Trust Account   $ 1,820,250    
Warrant [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   38,800,000   38,800,000