Schedule of Restructuring Accruals Expenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Beginning balance	$ 6,056	$ 0
Restructuring expenses	11,239	13,672	$ 0
Payments, utilization and other	(10,659)	(7,616)
Ending balance	$ 6,636	$ 6,056	$ 0