Annual report pursuant to Section 13 and 15(d)

Merger Agreement - Narrative (Details)

v3.21.4
Merger Agreement - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
May 07, 2021
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Business Acquisition [Line Items]        
Merger costs   $ 1,731 $ 0 $ 0
Proceeds from issuance of private placement   119,634 $ 0 $ 0
EIC        
Business Acquisition [Line Items]        
Merger costs   27,150    
PIPE financing, gross proceeds $ 125,000      
Proceeds from issuance of private placement $ 119,634      
Shares issued in PIPE, net of issuance costs (in shares) 12,500,000      
EIC | Old Blade Stock Option To Blade Stock Option        
Business Acquisition [Line Items]        
Recapitalization exchange ratio (in shares) 9,689,826      
EIC | Equity        
Business Acquisition [Line Items]        
Merger costs   25,419    
EIC | Public Warrants        
Business Acquisition [Line Items]        
Number of shares called by warrants (in shares) 9,166,666      
Purchase price (in dollars per share) $ 11.50      
EIC | Private Placement Warrants        
Business Acquisition [Line Items]        
Number of shares called by warrants (in shares) 5,000,000      
Purchase price (in dollars per share) $ 11.50      
EIC | Other Expense        
Business Acquisition [Line Items]        
Merger costs   $ 1,731    
EIC | Common Stock | Old Blade Common Stock To Blade Common Stock        
Business Acquisition [Line Items]        
Recapitalization exchange ratio (in shares) 10,024,296      
EIC | Preferred Stock | Old Blade Preferred Stock to Blade Common Stock        
Business Acquisition [Line Items]        
Recapitalization exchange ratio (in shares) 16,101,172