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Inventory (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Sep. 30, 2016
Inventory Disclosure [Abstract]    
Raw Materials $ 2,662 $ 2,538
Work in Process 3,336 4,158
Finished Goods 1,635 1,558
Parts and Supplies 6,581 4,982
Inventory, Net $ 14,214 $ 13,236