Corporate Restructuring and Other Organizational Changes - Components of Corporate Restructuring and Other Reorganization Activities from Recent Acquisitions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 2,793	$ 3,341
Restructuring charges incurred, net	1,339	8,535
Amounts paid during the period	(3,056)	(9,024)
Foreign currency translation adjustments	(31)	(59)
Ending balance	1,045	2,793
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	2,341	1,470
Restructuring charges incurred, net	1,339	8,671
Amounts paid during the period	(2,872)	(7,741)
Foreign currency translation adjustments	(31)	(59)
Ending balance	777	2,341
Facility Closures [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	452	1,871
Restructuring charges incurred, net		(136)
Amounts paid during the period	(184)	(1,283)
Ending balance	$ 268	$ 452