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

COVID 19 Risks and Uncertainties (Details)

v3.21.1
COVID 19 Risks and Uncertainties (Details) - Blade Urban Air Mobility [Member] - person
6 Months Ended 12 Months Ended
Mar. 31, 2021
Sep. 30, 2020
Unusual or Infrequent Item, or Both [Line Items]    
Number of passengers   16
Maximum    
Unusual or Infrequent Item, or Both [Line Items]    
Number of passengers 16