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Goodwill (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 806,643	$ 791,468
Additions	18,389
Reduction from Divestiture	(5,772)
Effects of Foreign Currency Translation	13,028	15,175
Goodwill, Ending Balance	832,288	806,643
Aerospace [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	455,423	455,423
Additions	18,389
Effects of Foreign Currency Translation	(33)
Goodwill, Ending Balance	473,779	455,423
Industrial [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	351,220	336,045
Reduction from Divestiture	(5,772)
Effects of Foreign Currency Translation	13,061	15,175
Goodwill, Ending Balance	$ 358,509	$ 351,220

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