Income Taxes - Income (Loss) before Provision For (Benefit From) Income Taxes (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020
Income (loss) before provision for income taxes
Domestic	$ 29,905		$ (86,550)	$ (18,594)
Foreign	10,056		20,637	(3,851)
Income (loss) before provision for income taxes	39,961		(65,913)	(22,445)
Federal
Current	59,162		2,702	130
Deferred	(70,046)		(48,043)	0
State
Current	4,385		1,004	39
Deferred	(10,431)		(4,980)	0
Foreign
Current	3,465		4,191	1,136
Deferred	280		(179)	(3,433)
(Benefit) for income taxes	$ (13,185)	$ (40,992)	$ (45,305)	$ (2,128)