Restructuring and Other Costs, Net - Schedule of Restructuring and Other Costs, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Restructuring Cost And Reserve [Line Items]
Restructuring and other costs, net	$ 1,197	$ 1,760	$ 6,586	$ 2,777
Personnel
Restructuring Cost And Reserve [Line Items]
Restructuring and other costs, net	1,278		1,528	381
Facilities
Restructuring Cost And Reserve [Line Items]
Restructuring and other costs, net	154	447	521	1,012
Restructuring Subtotal
Restructuring Cost And Reserve [Line Items]
Restructuring and other costs, net	1,432	447	2,049	1,393
Other
Restructuring Cost And Reserve [Line Items]
Restructuring and other costs, net	$ (235)	$ 1,313	$ 4,537	$ 1,384