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Inventories (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Sep. 30, 2015
Inventory Disclosure [Abstract]    
Finished goods $ 44,366 $ 55,074
Work in process 2,019 5,632
Raw material 74,685 70,769
Obsolescence reserve (10,948) (6,675)
Total $ 110,122 $ 124,800