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v2.4.1.9

Income Taxes: (Details 2) (USD $) | Sep. 30, 2014 | Sep. 30, 2013
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Current deferred tax assets: |  |
Reserves and accruals | $ 2,880,747 issc_DeferredTaxAssetsReservesAndAccrualsCurrent | $ 1,657,601 issc_DeferredTaxAssetsReservesAndAccrualsCurrent
Research and development credit | 396,276 issc_DeferredTaxAssetsTaxCreditCarryforwardsResearchAndDevelopmentCurrent | 349,195 issc_DeferredTaxAssetsTaxCreditCarryforwardsResearchAndDevelopmentCurrent
NOL carryforwards-state | 5,500 issc_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocalCurrent | 1,600 issc_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocalCurrent
Gross current deferred tax assets | 3,282,523 us-gaap_DeferredTaxAssetsGrossCurrent | 2,008,396 us-gaap_DeferredTaxAssetsGrossCurrent
Less: Valuation allowance | (37,300)us-gaap_DeferredTaxAssetsValuationAllowanceCurrent | (5,717)us-gaap_DeferredTaxAssetsValuationAllowanceCurrent
Total deferred tax assets | 3,245,223 us-gaap_DeferredTaxAssetsNetCurrent | 2,002,679 us-gaap_DeferredTaxAssetsNetCurrent
Net deferred tax asset | 3,245,223 issc_AggregateDeferredTaxAssetsNetOfValuationAllowanceAndNetOfLiabilitiesCurrent | 2,002,679 issc_AggregateDeferredTaxAssetsNetOfValuationAllowanceAndNetOfLiabilitiesCurrent
Non current deferred tax assets: |  |
Reserves and accruals | 170,562 issc_DeferredTaxAssetsReservesAndAccrualsNoncurrent | 196,312 issc_DeferredTaxAssetsReservesAndAccrualsNoncurrent
Research and development credit | 208,384 issc_DeferredTaxAssetsTaxCreditCarryforwardsResearchAndDevelopmentNoncurrent | 548,952 issc_DeferredTaxAssetsTaxCreditCarryforwardsResearchAndDevelopmentNoncurrent
NOL carryforwards-state | 1,237,553 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal | 1,246,615 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
Stock options | 630,160 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 714,040 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Depreciation | (795,050)us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment | (626,063)us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment
Other | 4,105 issc_DeferredTaxAssetsOtherNoncurrent | 4,023 issc_DeferredTaxAssetsOtherNoncurrent
Gross non current deferred tax assets | 1,455,714 us-gaap_DeferredTaxAssetsGrossNoncurrent | 2,083,879 us-gaap_DeferredTaxAssetsGrossNoncurrent
Less : Valuation allowance | (1,398,007)us-gaap_DeferredTaxAssetsValuationAllowanceNoncurrent | (1,432,881)us-gaap_DeferredTaxAssetsValuationAllowanceNoncurrent
Total deferred tax assets | 57,707 us-gaap_DeferredTaxAssetsNetNoncurrent | 650,998 us-gaap_DeferredTaxAssetsNetNoncurrent
Non current deferred tax liabilities: |  |
Depreciation | (132,999)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment | (132,202)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Total deferred tax liabilities | (132,999)us-gaap_DeferredTaxLiabilitiesGrossNoncurrent | (132,202)us-gaap_DeferredTaxLiabilitiesGrossNoncurrent
Net deferred tax asset (liability) | $ (75,292)issc_AggregateDeferredTaxAssetsLiabilitiesNetOfValuationAllowanceNoncurrent | $ 518,796 issc_AggregateDeferredTaxAssetsLiabilitiesNetOfValuationAllowanceNoncurrent

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