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Inventory (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Sep. 30, 2015
InventoryDisclosureAbstract    
Raw Materials $ 2,538 $ 1,641
Work in Process 4,158 2,641
Finished Goods 1,558 1,199
Parts and Supplies 4,982 8,496
Inventory, Net, Total $ 13,236 $ 13,977