Subsequent Events - Additional Information (Detail) (Subsequent Event, Amsted-Maxion Hortolandia, USD $) In Millions, unless otherwise specified	0 Months Ended
	Jan. 07, 2015	Jan. 07, 2015
Subsequent Event | Amsted-Maxion Hortolandia
Subsequent Event [Line Items]
Date of acquisition agreement	Jan. 07, 2015
Percentage of ownership interest entered an agreement to acquire	19.50%	19.50%
Purchase consideration price of ownership interest acquired	$ 15
Additional ownership interest to be acquired under agreement option	40.50%	40.50%