Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Inventory Disclosure [Abstract]
Finished goods	$ 54,403	$ 42,473
Work-in-process	8,647	28,582
Raw materials	77,789	82,599
Obsolescence reserve	(9,452)	(7,764)
Total	$ 131,387	$ 145,890