Reduction in cash due to no longer including the former subsidiary's cash in the consolidated entity's cash.

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Divestitures (Details) - USD ($) $ in Thousands	12 Months Ended
Divestitures (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration	$ 0	$ 42,631	$ 0
Goodwill divested during year		2,626
FlexHead Industries, Inc and SprinkFLEX, LLC \| Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration		42,631
Net assets divested		15,056
Gain on sale of a business		27,575
Mechanical Products & Solutions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill divested during year		$ 2,626