Income Taxes - Schedule of Income Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
U.S.	$ 56,923	$ 3,175	$ 3,076
Foreign	12,027	6,668	(1,984)
Income before income taxes	$ 68,950	$ 9,843	$ 1,092