Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Assets and Liabilities, Lessee [Abstract]
Operating lease other non-current asset	$ 14,829	$ 15,684
Total lease assets	14,829	15,684
Operating lease other current liabilities	2,989	2,633
Operating lease other non-current liability	16,824	18,368
Total lease liabilities	$ 19,813	$ 21,001