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, 2023	Jun. 30, 2022	Sep. 30, 2021
Income (loss) before provision for income taxes
Domestic	$ 29,905	$ (201,620)		$ (86,550)
Foreign	10,056	21,054		20,637
(Loss) income before provision for income taxes	39,961	(180,566)		(65,913)
Federal
Current	59,162	112,181		2,702
Deferred	(70,046)	(184,400)		(48,043)
State
Current	4,385	6,333		1,004
Deferred	(10,431)	(7,301)		(4,980)
Foreign
Current	3,465	9,293		4,191
Deferred	280	(8,912)		(179)
(Benefit) for income taxes	$ (13,185)	$ (72,806)	$ (17,498)	$ (45,305)