Other Non-Current Liabilities - Statement of Composition of Other Non Current Liablities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Other Liabilities Disclosure [Abstract]
Deferred revenue	$ 4,045	$ 1,614
Environmental and legal matters	13,133	13,459
Deferred compensation liability	50,728	41,665
Pension liability	14,923	37,855
Other non-current liabilities	5,777	4,074
Total other non-current liabilities	$ 88,606	$ 98,667