Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill foreign currency translation adjustment	$ 0	$ 60,000
Impairment of intangible assets	0	0
Amortization expense	$ 28,900,000	$ 20,000,000	$ 16,300,000