Per Share Information (Details)	12 Months Ended
Sep. 30, 2013	Sep. 30, 2012
Rights Offering [Abstract]
Weighted Average Number Of Shares Outstanding Basic Before Rights Offering	14,952,054	14,625,776
Weighted Average Number Of Shares Outstanding Diluted Before Rights Offering	14,952,054	14,625,776
Weighted Average Common Share Adjustment Factor	1.034	1.034

Representes the factor used in the calculation to derive the new weighted average number of shares after the rights offering

No definition available.

Name:	iesc_WeightedAverageCommonShareAdjustmentFactor
Namespace Prefix:	iesc_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant