Income Taxes - Components of the Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Domestic	$ 2,994	$ 618	$ 32,072	$ 369
Foreign	8,653	3,088	13,916	4,587
Provision for income taxes	$ 11,647	$ 3,706	$ 45,988	$ 4,956
Effective income tax rate	(4.40%)	(16.60%)	(22.10%)	(21.30%)