Leases - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating lease right of use asset non cash	$ 1.6	$ 0.8
Operating lease liability non cash	$ 1.6	$ 0.8
Minimum
Lessee, Lease, Description [Line Items]
Initial term of lease (in years)	3 years
Maximum
Lessee, Lease, Description [Line Items]
Initial term of lease (in years)	10 years