Income Taxes - Earnings Before Income Taxes and Related Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Domestic	$ (14,012)	$ 11,354	$ 9,068
Foreign	68,329	79,097	50,225
Earnings Before Income Taxes	54,317	90,451	59,293
Federal
Current	(460)	4,431	1,173
Deferred	(1,125)	(2,595)	744
State and local	451	1,163	1,170
Foreign
Current	13,316	16,305	10,194
Deferred	(324)	(260)	(174)
Income Tax Provision	$ 11,858	$ 19,044	$ 13,107

Amount of current federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current national tax expense (benefit) for non-US (United States of America) jurisdiction.

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Amount of deferred federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, deferred national tax expense (benefit) for non-US (United States of America) jurisdiction.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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