Schedule of Gains on Sale of Trademarks - Additional Information (Detail) (USD $) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Investments Debt And Equity Securities [Abstract]
Net gains (losses) on sale of trademarks	$ 0	$ 0	$ 0	$ 6,399	[1]

[1] Gains on sale of trademarks was previously reported as other revenue. Many of the gains recorded upon formation of certain joint ventures were reversed as a result of consolidation. The gains that were not impacted by consolidation, and therefore not reversed, have been reclassified and are being presented as a separate line item above operating income.