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

Merger Agreement (Details)

v3.21.1
Merger Agreement (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
May 07, 2021
Dec. 14, 2020
Nov. 16, 2018
Mar. 31, 2021
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2020
Dec. 31, 2019
Business Acquisition [Line Items]                
Preferred stock, par value       $ 0.0001     $ 0.0001 $ 0.0001
Class A Common stock                
Business Acquisition [Line Items]                
Common stock, par value       $ 0.0001     $ 0.0001 $ 0.0001
Number of shares outstanding       5,160,271     5,019,659 1,319,073
Blade Urban Air Mobility [Member]                
Business Acquisition [Line Items]                
Number of options granted   15,000 4,155,287 15,000 2,200,532 5,076,337    
Common stock, par value       $ 0.00001 $ 0.00001 $ 0.00001    
Preferred stock, par value         $ 0.00001      
Gross proceeds from PIPE financing $ 125,000              
Number of shares outstanding         12,592,851 12,502,885    
Blade Urban Air Mobility [Member] | Merger Agreement | Subsequent events                
Business Acquisition [Line Items]                
Common stock, par value $ 0.00001              
Preferred stock, par value $ 0.00001              
Number of warrants outstanding 14,166,667              
Blade Urban Air Mobility [Member] | Merger Agreement | Class A Common stock | Subsequent events                
Business Acquisition [Line Items]                
Number of shares issued in exchange of common stock upon merger 10,024,296              
Number of shares issued in exchange of preferred stock upon merger 16,101,172              
Number of options granted 9,689,826              
Gross proceeds from PIPE financing $ 125,000              
Number of shares issued 12,500,000              
Number of shares outstanding 78,903,021