Quarterly report pursuant to Section 13 or 15(d)

Inventory - Schedule of Inventory (Details)

v3.19.1
Inventory - Schedule of Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Finished goods $ 135 $ 43
Work in process 270 164
Raw materials 811 558
Total inventory $ 1,216 $ 765