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Right-of-Use Asset and Operating Lease Liability - Balance sheet information (Details)

v3.21.1
Right-of-Use Asset and Operating Lease Liability - Balance sheet information (Details) - Blade Urban Air Mobility [Member] - USD ($)
$ in Thousands
Mar. 31, 2021
Sep. 30, 2020
Sep. 30, 2019
Operating leases:      
Operating right-of-use asset $ 569 $ 737 $ 397
Operating lease liability, current 394 430 195
Operating lease liability, long term $ 125 $ 291 $ 175