Inventories (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Components of Inventory
Raw materials	$ 35,733	$ 13,953
Work-in-process	2,942	1,904
Finished goods	45,764	50,019
Inventories	84,439	65,876
Less reserve for excess and obsolete inventory	(2,208)	(2,744)
Inventories, net	$ 82,231	$ 63,132