Quarterly report pursuant to Section 13 or 15(d)

Inventory (Details)

v3.7.0.1
Inventory (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2017
Dec. 31, 2016
Inventory      
Inventory, Net, Total $ 7,451 $ 7,451 $ 4,109
Reduction in inventory valuation 456 893  
In Process Inventory [Member]      
Inventory      
Inventory, Net, Total 352 352 897
Plant Inventory [Member]      
Inventory      
Inventory, Net, Total 479 479 461
Conversion Facility Inventory [Member]      
Inventory      
Inventory, Net, Total $ 6,620 $ 6,620 $ 2,751