Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 4,019	$ 4,041
Finished goods	7,608	8,229
Reserves for excess, obsolete, and slow moving inventories and valuation reserves - Raw Materials	(901)	(1,261)
Reserves for excess, obsolete, and slow moving inventories and valuation reserves - Finished Goods	(2,475)	(2,951)
Inventories, net	$ 8,251	$ 8,058