Quarterly report pursuant to Section 13 or 15(d)

Inventory (Details)

v3.8.0.1
Inventory (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2017
Dec. 31, 2016
Inventory      
Inventory, Net, Total $ 1,720 $ 1,720 $ 4,109
Reduction in inventory valuation 1,326 2,219  
In Process Inventory [Member]      
Inventory      
Inventory, Net, Total 221 221 897
Plant Inventory [Member]      
Inventory      
Inventory, Net, Total 824 824 461
Conversion Facility Inventory [Member]      
Inventory      
Inventory, Net, Total $ 675 $ 675 $ 2,751