Acquisitions (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Aug. 31, 2022	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022
Business Acquisition [Line Items]
Goodwill		$ 799,147		$ 772,559
Future amortization expense associated with the acquired intangibles for fiscal year ended September 30, 2023		19,075
Future amortization expense associated with the acquired intangibles for fiscal year ended September 30, 2024		33,282
Future amortization expense associated with the acquired intangibles for fiscal year ended September 30, 2025		28,132
Future amortization expense associated with the acquired intangibles for fiscal year ended September 30, 2026		28,073
Future amortization expense associated with the acquired intangibles for fiscal year ended September 30, 2027		28,020
P M Controls [Member]
Business Acquisition [Line Items]
Total cash consideration	$ 22,890
Measurement period adjustment reduced intangible assets		(1,042)
Working capital adjustment resulting in reduction of goodwill		$ (863)
Goodwill	8,705
Future amortization expense associated with the acquired intangibles for fiscal year ended September 30, 2023			$ 1,191
Future amortization expense associated with the acquired intangibles for fiscal year ended September 30, 2024			865
Future amortization expense associated with the acquired intangibles for fiscal year ended September 30, 2025			757
Future amortization expense associated with the acquired intangibles for fiscal year ended September 30, 2026			757
Future amortization expense associated with the acquired intangibles for fiscal year ended September 30, 2027			$ 757
P M Agreements [Member] | P M Controls [Member]
Business Acquisition [Line Items]
Total cash consideration	$ 21,421