Goodwill, Trade Names/Trademarks and Other Intangible Assets, Net - Trade Names/Trademarks, Net (Detail) - Trade Names/Trademarks [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Definite And Indefinite Lived Intangible Assets By Major Class [Line Items]
Net Carrying Value, indefinite lives	$ 157,000	$ 157,000
Gross Carrying Amount, finite lives	12,900	12,900
Accumulated Amortization, finite lives	12,900	12,900
Gross Carrying Amount, total	169,900	169,900
Accumulated Amortization, total	12,900	12,900
Net Carrying Value, total	$ 157,000	$ 157,000
Weighted Average Amortization Period, finite lives	9 years 3 months 18 days	9 years 3 months 18 days