Corporate Restructuring and Other Organizational Changes - Components of Corporate Restructuring and Other Reorganization Activities from Recent Acquisitions (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 1,045
Restructuring charges incurred	2,216
Amounts paid during the period	(510)
Foreign currency translation	1
Ending balance	2,752
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	777
Amounts paid during the period	(417)	$ (2,200)
Foreign currency translation	1
Ending balance	361
Facility Closures [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	268
Restructuring charges incurred	2,216
Amounts paid during the period	(93)
Ending balance	$ 2,391