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Goodwill (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2021 USD ($) divestiture	Sep. 30, 2019 USD ($)
Goodwill [Roll Forward]
Goodwill at the beginning of year	$ 392,978	$ 398,292
Increase in goodwill related to acquisitions	0	14,054
Decrease in goodwill related to divestitures	(1,006)	(5,736)
Decrease in goodwill related to impairments	0	$ (13,632)
Goodwill at the end of the period	$ 391,972
Number of Businesses Sold | divestiture	2
Number of Businesses Sold (Goodwill Allocation) | divestiture	1

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Goodwill, Written Off Due To Discontinued Operations

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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