Goodwill (Schedule) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Goodwill [Roll Forward]
Goodwill, beginning of the period	$ 407,376	$ 397,205
Business combinations and divestitures	76,156	10,349
Measurement period adjustments	379	(3,216)
Foreign currency translation	(10,339)	3,038
Goodwill, end of the period	473,572	407,376
Integrated Solutions and Services
Goodwill [Roll Forward]
Goodwill, beginning of the period		224,381
Business combinations and divestitures		10,349
Measurement period adjustments		(3,216)
Foreign currency translation		2,316
Applied Product Technologies
Goodwill [Roll Forward]
Goodwill, beginning of the period		172,824
Business combinations and divestitures		0
Measurement period adjustments		0
Foreign currency translation		722
Operating Segments [Member] | Integrated Solutions and Services
Goodwill [Roll Forward]
Goodwill, beginning of the period	233,830
Business combinations and divestitures	76,190
Measurement period adjustments	379
Foreign currency translation	(3,464)
Goodwill, end of the period	306,935	233,830
Operating Segments [Member] | Applied Product Technologies
Goodwill [Roll Forward]
Goodwill, beginning of the period	173,546
Business combinations and divestitures	(34)
Measurement period adjustments	0
Foreign currency translation	(6,875)
Goodwill, end of the period	$ 166,637	$ 173,546