Inventory

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventory

Inventory

Inventory consisted of the following (in thousands):

	March 31, 2019		December 31, 2018
Finished goods	$	135	$	43
Work in process	270		164
Raw materials	811		558
Total inventory	$	1,216	$	765