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Restructuring Charges (Details) (Employee Termination And Moving Costs [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Employee Termination And Moving Costs [Member]
 
Restructuring Cost and Reserve [Line Items]  
Incurred restructuring charges $ 83us-gaap_RestructuringAndRelatedCostIncurredCost
/ us-gaap_RestructuringCostAndReserveAxis
= iin_EmployeeTerminationAndMovingCostsMember