Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Inventory Disclosure [Abstract]
Finished goods	$ 55,074	$ 42,473
Work in progress	5,632	28,582
Raw materials	70,769	82,599
Obsolescence reserve	(6,675)	(7,764)
Total	$ 124,800	$ 145,890