Corporate Restructuring and Other Organizational Changes - Components of Corporate Restructuring and Other Reorganization Activities from Recent Acquisitions (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 2,793
Restructuring charges incurred	1,338
Amounts paid during the period	(1,596)
Foreign currency translation	(128)
Ending balance	2,407
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	2,341
Restructuring charges incurred	1,338
Amounts paid during the period	(1,550)
Foreign currency translation	(128)
Ending balance	2,001
Facility Closures [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	452
Amounts paid during the period	(46)
Ending balance	$ 406