Other Non-Current Liabilities - Statement of Composition of Other Non Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Deferred revenue	$ 1,863	$ 2,988
Environmental and legal matters	22,703	18,258
Deferred compensation liability	53,133	43,042
Pension liability	29,494	41,252
Other non-current liabilities	12,160	9,221
Total other non-current liabilities	$ 119,353	$ 114,761