Discontinued Operations (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	6 Months Ended
Jun. 30, 2013 Other Assets Not Expected To Generate Significant Future Cash Flow [Member]	Dec. 31, 2013 Accounts Receivable, Inventory, Fixed Assets And Other Assets [Member]
Discontinued Operations [Line Items]
Impairment charge	$ 983	$ 717

Discontinued Operations, Assets, Impairment Charge Disclosure, Nonrecurring

No definition available.

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