Business Acquisition (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended	2 Months Ended		0 Months Ended	11 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Jul. 23, 2013 General Aluminum Forgings, LLC [Member]	Sep. 30, 2013 General Aluminum Forgings, LLC [Member]	Jul. 23, 2013 General Aluminum Forgings, LLC [Member]	Oct. 28, 2011 Forge Acquisition, LLC [Member]	Sep. 30, 2012 Forge Acquisition, LLC [Member]	Jun. 30, 2012 Forge Acquisition, LLC [Member]
Business Acquisition (Textual) [Abstract]
Consideration transferred				$ 4,400			$ 24,900
Purchase price adjustment						123			165
Net sales recorded from the date of acquisition					1,100			19,200
Operating income	$ 8,087	$ 13,766	$ 9,021		$ 216			$ 1,427