Asset Impairment Charges and Facility Closing and Reorganization Costs - Approved Plans and Related Charges (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Total	$ 8,719	$ 19,844	$ 4,460
Closure of facilities
Restructuring Cost and Reserve [Line Items]
Closure of facilities	8,719	$ 19,844	$ 4,460
Charges incurred to date	73,800
Expected costs	$ 5,200