Income Tax Expense - Principal Components Of Income Tax Expense (Benefit) From Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Federal:
Current	$ 25,681	$ 24,192	$ 7,248
Deferred	(7,670)	(5,816)	9,752
State and local:
Current	3,215	3,563	1,635
Deferred	(25)	(1,038)	1,774
Foreign:
Current	8,602	5,694	4,645
Deferred	(1,795)	(193)	(939)
Total	$ 28,008	$ 26,402	$ 24,115

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 current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of current state and local tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current regional, territorial, and provincial 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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