Quarterly report pursuant to Section 13 or 15(d)

Inventory (Details)

v3.3.0.814
Inventory (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Inventory [Line Items]    
Inventory, Net, Total $ 4,858 $ 5,168
Costs in excess of net realizable value 0  
In Process Inventory [Member]    
Inventory [Line Items]    
Inventory, Net, Total 1,121 2,084
Plant Inventory [Member]    
Inventory [Line Items]    
Inventory, Net, Total 712 882
Conversion Facility Inventory [Member]    
Inventory [Line Items]    
Inventory, Net, Total $ 3,025 $ 2,202