The amount of acquisition cost of a business combination allocated to liabilities assumed.

No definition available.

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Namespace Prefix:	iec_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Average borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Line of Credit Facility, Maximum Borrowing Capacity Based on Eligible Inventories

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Maximum Borrowing Capacity as Percentage of Eligible Receivables

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of the frequency of periodic payments, which may be presented in a variety of ways (for example, monthly, quarterly, annually).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of the required periodic payment applied to principal.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_ShortTermDebtTypeAxis=iec_AlbuquerqueMortgageLoanMember
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CREDIT FACILITIES - Narrative (Details) - USD ($)		1 Months Ended				9 Months Ended
CREDIT FACILITIES - Narrative (Details) - USD ($)	Dec. 14, 2015	Nov. 30, 2013	Jan. 31, 2013	Dec. 31, 2009	May 31, 2008	Jun. 30, 2017	Jul. 01, 2016	May 05, 2017	Sep. 30, 2016	Nov. 08, 2013	Jan. 18, 2013	Dec. 16, 2009
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 16,000,000
Repayments of long-term debt						16,064,000			$ 19,640,000
Average borrowing capacity						5,000,000
Albuquerque [Member]
Line of Credit Facility [Line Items]
Liabilities assumed						0
Credit Agreement 2013 [Member] \| Term Loan A [Member]
Line of Credit Facility [Line Items]
Long-term line of credit											$ 10,000,000
Repayment monthly installments			108 equal monthly installments
Line of credit facility, periodic payment, principal			$ 93,000
Credit Agreement 2013 [Member] \| Term Loan B [Member]
Line of Credit Facility [Line Items]
Long-term line of credit								$ 6,000,000			$ 14,000,000
Repayment monthly installments			120 equal monthly installments
Line of credit facility, periodic payment, principal			$ 117,000		$ 71,000
Credit Agreement 2013 [Member] \| Albuquerque Mortgage Loan [Member]
Line of Credit Facility [Line Items]
Repayment monthly installments		59 equal monthly installments		monthly installments
Credit Agreement 2013 [Member] \| Celmet Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, periodic payment, principal		$ 11,000
Fifth Amendment [Member] \| Term Loan B [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.75%
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 16,000,000.0			20,000,000
Maturity date						May 05, 2022
Repayments of long-term debt						$ 9,590,000			3,961,000
Maximum borrowing capacity as percentage of eligible receivables						85.00%
Maximum borrowing capacity based on eligible inventories						$ 7,000,000.0
Current borrowing capacity						$ 16,000,000.0			$ 16,400,000
Revolving Credit Facility [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Unused capacity, commitment fee percentage						0.25%
Revolving Credit Facility [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Unused capacity, commitment fee percentage							0.375%
Revolving Credit Facility [Member] \| Credit Agreement 2013 [Member]
Line of Credit Facility [Line Items]
Average borrowing capacity						$ 16,000,000
Commitment fee amount							$ 44,900
Revolving Credit Facility [Member] \| Fifth Amendment [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.50%
Albuquerque Mortgage Loan [Member] \| Credit Agreement 2013 [Member]
Line of Credit Facility [Line Items]
Long-term line of credit												$ 4,000,000
Debt instrument, periodic payment, principal				$ 22,000
Celmet Term Loan [Member] \| Third Amendment [Member]
Line of Credit Facility [Line Items]
Face amount										$ 1,300,000