Trade Names/Trademarks and Other Intangible Assets, Net - Trade Names/Trademarks, Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Definite And Indefinite Lived Intangible Assets By Major Class [Line Items]
Net Carrying Value, finite lives	$ 17,578
Weighted Average Amortization Period, finite lives	18 years 9 months 18 days
Trade Names/Trademarks [Member]
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	10,098	8,636
Net Carrying Value, finite lives	2,802	4,264
Gross Carrying Amount, total	169,900	169,900
Accumulated Amortization, total	10,098	8,636
Net Carrying Value, total	$ 159,802	$ 161,264
Weighted Average Amortization Period, finite lives	9 years 3 months 18 days	9 years 3 months 18 days