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Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Sep. 30, 2016
Inventory Disclosure [Abstract]    
Raw Materials $ 3,099 $ 2,538
Work in Process 5,517 4,158
Finished Goods 1,565 1,558
Parts and Supplies 8,130 4,982
Inventory, Net $ 18,311 $ 13,236