Estimated Future Amortization Expense for Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
2016	$ 50,574
2017	47,714
2018	34,368
2019	20,887
2020	19,787
Thereafter	46,866
Total intangible assets subject to amortization	220,196
Indefinite-lived trade names	357
Other intangible assets, net	$ 220,553	$ 259,312