Asset Impairment Charges and Facility Closing and Reorganization Costs - Approved Plans and Related Charges (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Cost and Reserve [Line Items]
Closure of Facilities	$ 2,709	$ 2,805	$ 9,362	$ 4,510
Charges and Adjustments	2,709	$ 2,805	9,362	$ 4,510
Facility Closing
Restructuring Cost and Reserve [Line Items]
Charges incurred to date	54,600		54,600
Expected costs	$ 4,000		$ 4,000