Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Sep. 30, 2015
Inventory Disclosure [Abstract]
Finished goods	$ 52,758	$ 55,074
Work in process	2,183	5,632
Raw material	72,802	70,769
Obsolescence reserve	(7,493)	(6,675)
Total	$ 120,250	$ 124,800