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Inventories (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Sep. 30, 2016
Inventories    
Raw Materials $ 19,679 $ 21,587
Work-in-process 119,346 118,822
Finished Goods 106,977 94,772
Other 1,394 1,377
Total $ 247,396 $ 236,558