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v2.4.1.9

Income Taxes (Details 2) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Current Deferred Tax Assets: |  |
Accrued expenses | $ 68,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities | $ 134,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
Allowance for doubtful accounts | 32,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts | 6,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts
Inventory reserve | 13,000 us-gaap_DeferredTaxAssetsInventory | 14,000 us-gaap_DeferredTaxAssetsInventory
Net operating loss carryforwards | 3,000 isig_CurrentDeferredTaxAssetsOperatingLossCarryforwards | 16,000 isig_CurrentDeferredTaxAssetsOperatingLossCarryforwards
Prepaid expenses | (71,000)us-gaap_DeferredTaxLiabilitiesPrepaidExpenses |
Other | 7,000 us-gaap_DeferredTaxAssetsOther | 1,000 us-gaap_DeferredTaxAssetsOther
Current deferred tax assets | 52,000 us-gaap_DeferredTaxAssetsNetCurrent | 171,000 us-gaap_DeferredTaxAssetsNetCurrent
Long-Term Deferred Tax Assets (Liabilities): |  |
Depreciation | (324,000)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment | (372,000)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Stock options | 73,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 68,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Net operating loss carryforwards | 29,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | 20,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Long-term deferred tax liabilities | $ (222,000)us-gaap_DeferredTaxLiabilitiesNoncurrent | $ (284,000)us-gaap_DeferredTaxLiabilitiesNoncurrent

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