Quarterly report pursuant to Section 13 or 15(d)

Inventory (Details)

v3.8.0.1
Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Inventory Disclosure [Abstract]    
Finished goods $ 18 $ 512
Work in process 58 182
Raw materials 857 545
Total inventory $ 933 $ 1,239