Inventories (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Components of Inventory
Raw materials	$ 29,681	$ 13,953
Work-in-process	2,880	1,904
Finished goods	51,026	50,019
Inventories	83,587	65,876
Less reserve for excess and obsolete inventory	(2,148)	(2,744)
Inventories, net	$ 81,439	$ 63,132