Goodwill and Intangible Assets (Additional Information) (Detail) $ in Thousands	3 Months Ended	12 Months Ended
Sep. 30, 2020 USD ($) segment	Sep. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Number of reporting units \| segment	4
Amortization of Intangible Assets	$ 2,518	$ 2,534
Goodwill write-off			$ 0

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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