Name:	iehc_LesseeOperatingLeaseLiabilityPaymentsDueExcludingInterest
Namespace Prefix:	iehc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payments for operating lease, interest portion.

No definition available.

Name:	iehc_LesseeOperatingLeaseLiabilityPaymentsDueInterest
Namespace Prefix:	iehc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year, excluding interest expense.

No definition available.

Name:	iehc_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonthsExcludingInterest
Namespace Prefix:	iehc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year, interest portion.

No definition available.

Name:	iehc_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonthsInterest
Namespace Prefix:	iehc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year, excluding interest expense.

No definition available.

Name:	iehc_LesseeOperatingLeaseLiabilityPaymentsDueYearTwoExcludingInterest
Namespace Prefix:	iehc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year, interest portion.

No definition available.

Name:	iehc_LesseeOperatingLeaseLiabilityPaymentsDueYearTwoInterest
Namespace Prefix:	iehc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

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

Amount of lessee's undiscounted obligation for lease payments for operating lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

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

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year.

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

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.