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Inventory (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Sep. 30, 2014
InventoryDisclosureAbstract    
Raw Materials $ 1,641 $ 1,978
Work in Process 2,641 2,618
Finished Goods 1,199 1,819
Parts and Supplies 8,496 9,633
Inventory, Net, Total $ 13,977 $ 16,048