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Domestic And Foreign Income Taxes (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Operating Loss Carryforwards [Line Items]      
Change in valuation allowance $ 59us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount $ (637)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount $ (264)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Amount excluded from operating loss carryforwards 413us-gaap_UnrecognizedTaxBenefitsResultingInNetOperatingLossCarryforward    
Unrecognized tax benefits 0us-gaap_UnrecognizedTaxBenefits 0us-gaap_UnrecognizedTaxBenefits 0us-gaap_UnrecognizedTaxBenefits
Accrued amounts for payments of interest penalties 0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued 0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued  
Minimum [Member]      
Operating Loss Carryforwards [Line Items]      
Percentage likelihood that benefit will be realized upon settlement with taxing authorities 50.00%iin_SettlementLikelihoodPercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Federal [Member]      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforward 22,861us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_InternalRevenueServiceIRSMember
   
State [Member]      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforward $ 7,651us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember