Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Raw material and supplies	$ 2,850	$ 3,052
Work in process	416	931
Finished goods	22,054	14,852
Inventory, gross	25,320	18,835
Inventory reserve	(3,812)	(4,076)
Inventory, net	$ 21,508	$ 14,759