<?xml version="1.0" encoding="utf-8"?>
<FilingSummary xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <Version>2.4.0.8</Version>
  <ProcessingTime />
  <ReportFormat>Html</ReportFormat>
  <ContextCount>231</ContextCount>
  <ElementCount>249</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>51</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000 - Disclosure - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document And Entity Information</ShortName>
    </Report>
    <Report>
      <IsDefault>true</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>001 - Statement - Condensed Consolidated Balance Sheets (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/ConsolidatedBalanceSheet</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Unaudited)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>002 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/ConsolidatedBalanceSheet_Parentheticals</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>003 - Statement - Condensed Consolidated Income Statements (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/ConsolidatedIncomeStatement</Role>
      <ShortName>Condensed Consolidated Income Statements (Unaudited)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>004 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/ConsolidatedComprehensiveIncome</Role>
      <ShortName>Condensed Consolidated Statements of Comprehensive Income (Unaudited)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>005 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/ShareholdersEquityType2or3</Role>
      <ShortName>Condensed Consolidated Statements of Stockholders' Equity (Unaudited)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>006 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/ConsolidatedCashFlow</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows (Unaudited)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>007 - Disclosure - Note 1 - Nature of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note1NatureofOperations</Role>
      <ShortName>Note 1 - Nature of Operations</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>008 - Disclosure - Note 2 - Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note2BasisofPresentation</Role>
      <ShortName>Note 2 - Basis of Presentation</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>009 - Disclosure - Note 3 - New Accounting Pronouncements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note3NewAccountingPronouncements</Role>
      <ShortName>Note 3 - New Accounting Pronouncements</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>010 - Disclosure - Note 4 - Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note4Investments</Role>
      <ShortName>Note 4 - Investments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>011 - Disclosure - Note 5 - Fair Values of Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note5FairValuesofFinancialInstruments</Role>
      <ShortName>Note 5 - Fair Values of Financial Instruments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>012 - Disclosure - Note 6 - Earnings per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note6EarningsperShare</Role>
      <ShortName>Note 6 - Earnings per Share</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>013 - Disclosure - Note 7 - Segment Data</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note7SegmentData</Role>
      <ShortName>Note 7 - Segment Data</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>014 - Disclosure - Note 8 - Federal Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note8FederalIncomeTaxes</Role>
      <ShortName>Note 8 - Federal Income Taxes</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>015 - Disclosure - Note 9 - Other Comprehensive Income (Loss)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note9OtherComprehensiveIncomeLoss</Role>
      <ShortName>Note 9 - Other Comprehensive Income (Loss)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>016 - Disclosure - Note 10 - Employee Benefit Plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note10EmployeeBenefitPlans</Role>
      <ShortName>Note 10 - Employee Benefit Plans</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>017 - Disclosure - Note 11 - Note Payable</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note11NotePayable</Role>
      <ShortName>Note 11 - Note Payable</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>018 - Disclosure - Note 4 - Investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note4InvestmentsTables</Role>
      <ShortName>Note 4 - Investments (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>019 - Disclosure - Note 5 - Fair Values of Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note5FairValuesofFinancialInstrumentsTables</Role>
      <ShortName>Note 5 - Fair Values of Financial Instruments (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>020 - Disclosure - Note 7 - Segment Data (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note7SegmentDataTables</Role>
      <ShortName>Note 7 - Segment Data (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>021 - Disclosure - Note 9 - Other Comprehensive Income (Loss) (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note9OtherComprehensiveIncomeLossTables</Role>
      <ShortName>Note 9 - Other Comprehensive Income (Loss) (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>022 - Disclosure - Note 10 - Employee Benefit Plans (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note10EmployeeBenefitPlansTables</Role>
      <ShortName>Note 10 - Employee Benefit Plans (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>023 - Disclosure - Note 1 - Nature of Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note1NatureofOperationsDetails</Role>
      <ShortName>Note 1 - Nature of Operations (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>024 - Disclosure - Note 4 - Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note4InvestmentsDetails</Role>
      <ShortName>Note 4 - Investments (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>025 - Disclosure - Note 4 - Investments (Details) - Available-for-sale Securities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/AvailableforsaleSecuritiesTable</Role>
      <ShortName>Note 4 - Investments (Details) - Available-for-sale Securities</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>026 - Disclosure - Note 4 - Investments (Details) - Securities in an Unrealized Loss Position</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/SecuritiesinanUnrealizedLossPositionTable</Role>
      <ShortName>Note 4 - Investments (Details) - Securities in an Unrealized Loss Position</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>027 - Disclosure - Note 4 - Investments (Details) - Net Unrealized Gains for Investments Classified as Available-for-sale</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/NetUnrealizedGainsforInvestmentsClassifiedasAvailableforsaleTable</Role>
      <ShortName>Note 4 - Investments (Details) - Net Unrealized Gains for Investments Classified as Available-for-sale</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>028 - Disclosure - Note 4 - Investments (Details) - Fixed Maturity Securities by Contractual Maturity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/FixedMaturitySecuritiesbyContractualMaturityTable</Role>
      <ShortName>Note 4 - Investments (Details) - Fixed Maturity Securities by Contractual Maturity</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>029 - Disclosure - Note 4 - Investments (Details) - Proceeds from Sales and Maturities of Investments in Available-for-sale</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/ProceedsfromSalesandMaturitiesofInvestmentsinAvailableforsaleTable</Role>
      <ShortName>Note 4 - Investments (Details) - Proceeds from Sales and Maturities of Investments in Available-for-sale</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>030 - Disclosure - Note 4 - Investments (Details) - Available-for-sale Securities - Change in Unrealized Gains (Losses) and Realized Gains (Losses)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/AvailableforsaleSecuritiesChangeinUnrealizedGainsLossesandRealizedGainsLossesTable</Role>
      <ShortName>Note 4 - Investments (Details) - Available-for-sale Securities - Change in Unrealized Gains (Losses) and Realized Gains (Losses)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>031 - Disclosure - Note 4 - Investments (Details) - State-guaranteed Receivables by Contractual Maturity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/StateguaranteedReceivablesbyContractualMaturityTable</Role>
      <ShortName>Note 4 - Investments (Details) - State-guaranteed Receivables by Contractual Maturity</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>032 - Disclosure - Note 4 - Investments (Details) - Amortized Cost of State-guaranteed Receivables, by State</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/AmortizedCostofStateguaranteedReceivablesbyStateTable</Role>
      <ShortName>Note 4 - Investments (Details) - Amortized Cost of State-guaranteed Receivables, by State</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>033 - Disclosure - Note 4 - Investments (Details) - Net Investment Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/NetInvestmentIncomeTable</Role>
      <ShortName>Note 4 - Investments (Details) - Net Investment Income</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>034 - Disclosure - Note 5 - Fair Values of Financial Instruments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note5FairValuesofFinancialInstrumentsDetails</Role>
      <ShortName>Note 5 - Fair Values of Financial Instruments (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>035 - Disclosure - Note 5 - Fair Values of Financial Instruments (Details) - Financial Instruments Measured at Fair Value on a Recurring Basis</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/FinancialInstrumentsMeasuredatFairValueonaRecurringBasisTable</Role>
      <ShortName>Note 5 - Fair Values of Financial Instruments (Details) - Financial Instruments Measured at Fair Value on a Recurring Basis</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>036 - Disclosure - Note 5 - Fair Values of Financial Instruments (Details) - Changes in Fair Value of Level 3 Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/ChangesinFairValueofLevel3FinancialInstrumentsTable</Role>
      <ShortName>Note 5 - Fair Values of Financial Instruments (Details) - Changes in Fair Value of Level 3 Financial Instruments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>037 - Disclosure - Note 5 - Fair Values of Financial Instruments (Details) - Estimated Fair Values of Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/EstimatedFairValuesofFinancialInstrumentsTable</Role>
      <ShortName>Note 5 - Fair Values of Financial Instruments (Details) - Estimated Fair Values of Financial Instruments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>038 - Disclosure - Note 6 - Earnings per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note6EarningsperShareDetails</Role>
      <ShortName>Note 6 - Earnings per Share (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>039 - Disclosure - Note 7 - Segment Data (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note7SegmentDataDetails</Role>
      <ShortName>Note 7 - Segment Data (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>040 - Disclosure - Note 7 - Segment Data (Details) - Segments by Operating Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/SegmentsbyOperatingInformationTable</Role>
      <ShortName>Note 7 - Segment Data (Details) - Segments by Operating Information</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>041 - Disclosure - Note 9 - Other Comprehensive Income (Loss) (Details) - Other Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/OtherComprehensiveIncomeTable</Role>
      <ShortName>Note 9 - Other Comprehensive Income (Loss) (Details) - Other Comprehensive Income</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>042 - Disclosure - Note 9 - Other Comprehensive Income (Loss) (Details) - Accumulated Other Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/AccumulatedOtherComprehensiveIncomeTable</Role>
      <ShortName>Note 9 - Other Comprehensive Income (Loss) (Details) - Accumulated Other Comprehensive Income</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>043 - Disclosure - Note 9 - Other Comprehensive Income (Loss) (Details) - Amounts Reclassified from AOCI to Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/AmountsReclassifiedfromAOCItoIncomeTable</Role>
      <ShortName>Note 9 - Other Comprehensive Income (Loss) (Details) - Amounts Reclassified from AOCI to Income</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>044 - Disclosure - Note 10 - Employee Benefit Plans (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note10EmployeeBenefitPlansDetails</Role>
      <ShortName>Note 10 - Employee Benefit Plans (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>045 - Disclosure - Note 10 - Employee Benefit Plans (Details) - Net Periodic Benefit Cost</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/NetPeriodicBenefitCostTable</Role>
      <ShortName>Note 10 - Employee Benefit Plans (Details) - Net Periodic Benefit Cost</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>046 - Disclosure - Note 11 - Note Payable (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.investorsheritage.com/role/Note11NotePayableDetails</Role>
      <ShortName>Note 11 - Note Payable (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Info">Process Flow-Through: 001 - Statement - Condensed Consolidated Balance Sheets (Unaudited)</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Sep. 30, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2011'</Log>
    <Log type="Info">Process Flow-Through: 002 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals)</Log>
    <Log type="Info">Process Flow-Through: 003 - Statement - Condensed Consolidated Income Statements (Unaudited)</Log>
    <Log type="Info">Process Flow-Through: 004 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited)</Log>
    <Log type="Info">Process Flow-Through: 006 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</Log>
  </Logs>
  <InputFiles>
    <File>ihrc-20130930.xml</File>
    <File>ihrc-20130930.xsd</File>
    <File>ihrc-20130930_cal.xml</File>
    <File>ihrc-20130930_def.xml</File>
    <File>ihrc-20130930_lab.xml</File>
    <File>ihrc-20130930_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
