Goodwill and Intangible Assets Net - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Dispose, impair or recognition of additional goodwill	$ 0
Estimated useful life of intangible assets	10 years
Accumulated amortization intangible assets	$ 2,000,000.0	$ 1,900,000