Business Combination - Preliminary Valuation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended		0 Months Ended	3 Months Ended			0 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Feb. 13, 2013 Business Acquisition Acro [Member]	Mar. 31, 2014 Business Acquisition Acro [Member]	Dec. 31, 2012 Business Acquisition Acro [Member]	Feb. 12, 2013 Business Acquisition Acro [Member]	Sep. 13, 2013 Business Acquistion Miscor [Member]
Business Acquisition [Line Items]
Receivable Owed to IES			$ 1,042		$ 2,263
Cash Purchase Consideration	0	828	828				4,364
Fair Value of Contingent Consideration				0		665
Total Consideration Transferred			4,798
IES Shares provided in MISCOR consideration							2,795,577
Value of IES Shares provided in MISCOR consideration							11,853
Change in Acro Contingent Consideration				$ 95