General (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended
Jun. 13, 2013
General [Abstract]
Expected annual cost reduction amount	$ 3.0

Restructuring And Related Cost, Expected Annual Reduction Amount

No definition available.

Name:	iin_RestructuringAndRelatedCostExpectedAnnualReductionAmount
Namespace Prefix:	iin_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration