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Per Share Information (Details)	3 Months Ended
	Dec. 31, 2013
Rights Offering [Abstract]
Weighted Average Number Of Shares Outstanding Basic Before Rights Offering	17,817,254iesc_WeightedAverageNumberOfSharesOutstandingBasicBeforeRightsOffering
Weighted Average Number Of Shares Outstanding Diluted Before Rights Offering	17,898,832iesc_WeightedAverageNumberOfSharesOutstandingDilutedBeforeRightsOffering
Weighted Average Common Share Adjustment Factor	1.034iesc_WeightedAverageCommonShareAdjustmentFactor
Stock Option [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	150,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_EmployeeStockOptionMember

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- Definition

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

+ References

No definition available.

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- Definition

No authoritative reference available.

+ References

No definition available.

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- Definition

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No definition available.

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Antidilution

-URI http://asc.fasb.org/extlink&oid=6505113



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Diluted Earnings Per Share

-URI http://asc.fasb.org/extlink&oid=6510752



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Contingent Stock Agreement

-URI http://asc.fasb.org/extlink&oid=6508534

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