General form of registration statement for all companies including face-amount certificate companies

RELATED PARTY TRANSACTIONS (Details)

v3.21.1
RELATED PARTY TRANSACTIONS (Details)
 1 Months Ended 3 Months Ended 7 Months Ended 12 Months Ended
May 31, 2019
USD ($)
shares
Mar. 31, 2021
Dec. 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
shares
Oct. 31, 2019
USD ($)
May 24, 2019
USD ($)
Related Party Transaction [Line Items]            
Issuance of Founder Shares to Sponsor (in shares) | shares 7,187,500          
Issuance of Founder Shares to Sponsor | $ $ 25,000   $ 25,000      
Conversion of stock, ratio 1          
Number of shares subject to forfeiture | shares       937,500    
Number of founder Shares forfeited | shares       312,500    
Number of founder Shares no longer subject to forfeiture | shares       625,000    
Term for restriction from transfer, assign or sell Shares after the completion of a Business Combination   180 days   180 days    
Maximum borrowing under the note to cover expenses related to the Initial Public Offering | $           $ 300,000
Outstanding borrowings under the Promissory Note | $         $ 231,366  
Working capital loans that may be convertible into warrants | $       $ 1,500,000    
New Blade Common Stock            
Related Party Transaction [Line Items]            
Conversion of stock, ratio   1