Inventories, Net - Components of Inventory (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Inventory, Net [Abstract]
Raw material	$ 79,232	$ 53,528
Work in process	2,760	1,446
Finished goods	3,183	2,522
Total inventories	85,175	57,496
Reserve	(1,935)	(1,510)
Inventories, net	$ 83,240	$ 55,986