Goodwill - Additional Information (Detail) $ in Millions	9 Months Ended
Sep. 30, 2020 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill impairment charge	$ 9.5

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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