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Acquisitions Details (Details) - USD ($) $ in Thousands		9 Months Ended
Acquisitions Details (Details) - USD ($) $ in Thousands	Nov. 01, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2021
Business Acquisition [Line Items]
Goodwill		$ 341,708		$ 225,522
Operating lease right-of-use assets		14,829		15,684
Operating lease liabilities		16,824		$ 18,368
Ventus
Business Acquisition [Line Items]
Cash paid at closing	$ 350,000
Goodwill	$ 118,265
Weighted average useful life identifiable intangibles	19 years 2 months 12 days
Ventus \| Customer Relationships
Business Acquisition [Line Items]
Weighted average useful life identifiable intangibles	20 years 6 months
Ventus \| Trademarks
Business Acquisition [Line Items]
Weighted average useful life identifiable intangibles	13 years
Ventus \| Purchased and Core Technology
Business Acquisition [Line Items]
Weighted average useful life identifiable intangibles	11 years
Ventus \| General and Administrative
Business Acquisition [Line Items]
Acquisition costs		$ 4,200	$ 3,100
Other non-current assets \| Ventus
Business Acquisition [Line Items]
Operating lease right-of-use assets	$ 700
Other current liabilities and other noncurrent liabilities \| Ventus
Business Acquisition [Line Items]
Operating lease liabilities	$ 700