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

Stock-Based Compensation - Stock-Based Compensation Expense (Details)

v3.21.1
Stock-Based Compensation - Stock-Based Compensation Expense (Details) - Blade Urban Air Mobility [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Sep. 30, 2020
Sep. 30, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]            
Stock-based compensation expense $ 1,904 $ 87 $ 3,179 $ 178 $ 490 $ 317
Software development expenses            
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]            
Stock-based compensation expense 71 6 88 12 29 35
General and administrative expenses            
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]            
Stock-based compensation expense $ 1,833 75 $ 3,091 154 $ 461 270
Sales and marketing expenses            
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]            
Stock-based compensation expense   $ 6   $ 12   $ 12