Research And Development (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2013
Research and Development [Abstract]
Accrued research and development tax credit grant refunds	$ 570	$ 570

Accrued Research And Development Tax Credit Grant Refunds

No definition available.

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