Goodwill and Intangibles - Carrying Amount of Goodwill by Reportable Operating Segment (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 18,977
Goodwill [Roll Forward]
Goodwill, Beginning Balance	135,169
Foreign exchange translation	(2,191)
Goodwill, Ending Balance	151,955
North America [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill [Roll Forward]
Goodwill, Beginning Balance	117,609
Foreign exchange translation	(767)
Goodwill, Ending Balance	116,842
Europe [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill [Roll Forward]
Goodwill, Beginning Balance	12,366
Foreign exchange translation	(1,001)
Goodwill, Ending Balance	11,365
South America [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill [Roll Forward]
Goodwill, Beginning Balance	0
Foreign exchange translation	0
Goodwill, Ending Balance	0
Asia Pacific [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	18,977
Goodwill [Roll Forward]
Goodwill, Beginning Balance	5,194
Foreign exchange translation	(423)
Goodwill, Ending Balance	$ 23,748