Acquisitions (Details) - USD ($) $ in Thousands				12 Months Ended
	Nov. 04, 2021	Aug. 09, 2021	Jul. 29, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition
Payments to acquire businesses net of cash acquired				$ 10,906	$ 168,903
Goodwill, tax deductible expenses				11,691	13,746
Goodwill				492,709	$ 504,853	$ 408,100
Phenix Technologies
Business Acquisition
Payments to acquire businesses net of cash acquired		$ 47,200
Business combination recognized identifiable assets acquired and liabilities assumed current assets receivables		2,600
Business combination recognized identifiable assets acquired and liabilities assumed inventory		5,800
Business combination recognized identifiable assets acquired and liabilities assumed, property, plant and equipment		8,000
Business combination recognized identifiable assets acquired and liabilities assumed current liabilities accounts payable		6,200
Goodwill, tax deductible expenses		15,000
Amount received on finalization of working capital adjustment				$ 4,600
Goodwill		18,700
Networks electronic company
Business Acquisition
Payments to acquire businesses net of cash acquired	$ 15,400
Business combination recognized identifiable assets acquired and liabilities assumed current assets receivables	600
Business combination recognized identifiable assets acquired and liabilities assumed inventory	1,500
Business combination recognized identifiable assets acquired and liabilities assumed, property, plant and equipment	200
Business combination recognized identifiable assets acquired and liabilities assumed current liabilities accounts payable	700
Business combination recognized identifiable assets acquired and liabilities assumed intangible assets other than goodwill	8,100
Goodwill	5,700
I.s.a. Altanova Group S.r.l. Altanova
Business Acquisition
Payments to acquire businesses net of cash acquired			$ 115,000
Business combination recognized identifiable assets acquired and liabilities assumed current assets receivables			9,700
Business combination recognized identifiable assets acquired and liabilities assumed inventory			5,600
Business combination recognized identifiable assets acquired and liabilities assumed, property, plant and equipment			1,200
Business combination recognized identifiable assets acquired and liabilities assumed current liabilities accounts payable			12,800
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities			16,700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets			9,000
Business Combination, Contingent Consideration, Liability			6,900
Goodwill			71,100
Customer Relationships | Phenix Technologies
Business Acquisition
Business combination recognized identifiable assets acquired and liabilities assumed indefinite-lived intangible assets		$ 9,600
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life		13 years
Customer Relationships | Networks electronic company
Business Acquisition
Business combination recognized identifiable assets acquired and liabilities assumed indefinite-lived intangible assets	$ 6,300
Customer Relationships | I.s.a. Altanova Group S.r.l. Altanova
Business Acquisition
Business combination recognized identifiable assets acquired and liabilities assumed indefinite-lived intangible assets			$ 50,500
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life			20 years
Customer Relationships and Developed Technology | Phenix Technologies
Business Acquisition
Business combination recognized identifiable assets acquired and liabilities assumed indefinite-lived intangible assets		$ 500
Trade Names | Phenix Technologies
Business Acquisition
Business combination recognized identifiable assets acquired and liabilities assumed indefinite-lived intangible assets		$ 3,700
Trade Names | I.s.a. Altanova Group S.r.l. Altanova
Business Acquisition
Business combination recognized identifiable assets acquired and liabilities assumed indefinite-lived intangible assets			$ 4,300
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life			10 years