Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw material and supplies	$ 2,603	$ 3,165
Work in process	235	221
Finished goods	20,529	20,164
Inventory, gross	23,367	23,550
Inventory reserve	(2,596)	(2,751)
Inventory, net	$ 20,771	$ 20,799