Corporate Restructuring and Other Organizational Changes - Components of Corporate Restructuring and Other Reorganization Activities from Recent Acquisitions (Detail) - Facility Closures [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 5,945	$ 4,559
Restructuring charges (adjustments) incurred, net		2,447
Amounts paid during the period	(1,732)	(1,285)
Foreign currency translation adjustments	(86)	224
Ending balance	$ 4,127	$ 5,945