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Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Sep. 30, 2015
Inventory Disclosure [Abstract]    
Raw Materials $ 1,429 $ 1,641
Work in Process 3,271 2,641
Finished Goods 970 1,199
Parts and Supplies 6,991 8,496
Inventory, Net $ 12,661 $ 13,977