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Stockholders' Equity, Options and Warrants (Details Narrative) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected life 1 year 3 months  
Unrecognized compensation expense related to stock options $ 131,829us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions  
2006 Equity Incentive Plan | Chief Executive Officer    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Common stock issued to employees, shares 280,000us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
/ us-gaap_PlanNameAxis
= inis_TwoThousandSixEquityIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Common stock issued to employees, value 28,000us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
/ us-gaap_PlanNameAxis
= inis_TwoThousandSixEquityIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Stock issued, price per share $ 0.10us-gaap_SaleOfStockPricePerShare
/ us-gaap_PlanNameAxis
= inis_TwoThousandSixEquityIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Shares withheld for payroll tax liabilities 112,140us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_PlanNameAxis
= inis_TwoThousandSixEquityIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Stock-based compensation expense 14,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_PlanNameAxis
= inis_TwoThousandSixEquityIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
 
Employee Stock Purchase Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Common stock issued to employees, shares 60,715us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
47,825us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Common stock issued to employees, value 1,546us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
2,439us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Stock-Based Compensation    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense $ 56,345us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_StockCompensationPlanMember
$ 29,193us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_StockCompensationPlanMember