Goodwill and Other Intangible Assets, Net - Additional Information (Detail) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill impairment loss	$ 0	$ 0
Intangible amortization expense	6,900,000	5,600,000	$ 11,100,000
Impairment charges of Grubb tradename	$ 1,600,000	$ 0	$ 6,300,000

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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