<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>741</ContextCount>
  <ElementCount>398</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>82</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>6</UnitCount>
  <MyReports>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>1001002 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/ConsolidatedBalanceSheets</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1002003 - Statement - Consolidated Balance Sheets (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/ConsolidatedBalanceSheetsParentheticals</Role>
      <ShortName>Consolidated Balance Sheets (Parentheticals)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1003004 - Statement - Consolidated Statements of Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/ConsolidatedStatementsofIncome</Role>
      <ShortName>Consolidated Statements of Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1004005 - Statement - Consolidated Statements of Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/ConsolidatedStatementsofComprehensiveIncome</Role>
      <ShortName>Consolidated Statements of Comprehensive Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1005006 - Statement - Consolidated Statements of Changes in Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/ConsolidatedStatementsofChangesinStockholdersEquity</Role>
      <ShortName>Consolidated Statements of Changes in Stockholders' Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>1006007 - Statement - Consolidated Statements of Changes in Stockholders' Equity (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/ConsolidatedStatementsofChangesinStockholdersEquityParenthetical</Role>
      <ShortName>Consolidated Statements of Changes in Stockholders' Equity (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>1007008 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/ConsolidatedStatementsofCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>2101101 - Disclosure - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/SummaryofSignificantAccountingPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2103102 - Disclosure - Recent Accounting Pronouncements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/RecentAccountingPronouncements</Role>
      <ShortName>Recent Accounting Pronouncements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2104103 - Disclosure - Debt Securities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/DebtSecurities</Role>
      <ShortName>Debt Securities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2110104 - Disclosure - Other Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/OtherInvestments</Role>
      <ShortName>Other Investments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2113105 - Disclosure - Loans Held For Sale</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansHeldForSale</Role>
      <ShortName>Loans Held For Sale</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2116106 - Disclosure - Loans and Allowance for Credit Losses on Loans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoans</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2129107 - Disclosure - Net Income per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/NetIncomeperShare</Role>
      <ShortName>Net Income per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2133108 - Disclosure - Equity Incentive Plan</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/EquityIncentivePlan</Role>
      <ShortName>Equity Incentive Plan</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2140109 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/CommitmentsandContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2142110 - Disclosure - Fair Value of Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/FairValueofFinancialInstruments</Role>
      <ShortName>Fair Value of Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2148111 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/Leases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2202201 - Disclosure - Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/SummaryofSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.hometrustbanking.com/role/SummaryofSignificantAccountingPolicies</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2305301 - Disclosure - Debt Securities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/DebtSecuritiesTables</Role>
      <ShortName>Debt Securities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.hometrustbanking.com/role/DebtSecurities</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2311302 - Disclosure - Other Investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/OtherInvestmentsTables</Role>
      <ShortName>Other Investments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.hometrustbanking.com/role/OtherInvestments</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2314303 - Disclosure - Loans Held For Sale (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansHeldForSaleTables</Role>
      <ShortName>Loans Held For Sale (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.hometrustbanking.com/role/LoansHeldForSale</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2317304 - Disclosure - Loans and Allowance for Credit Losses on Loans (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansTables</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoans</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2330305 - Disclosure - Net Income per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/NetIncomeperShareTables</Role>
      <ShortName>Net Income per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.hometrustbanking.com/role/NetIncomeperShare</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2334306 - Disclosure - Equity Incentive Plan (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/EquityIncentivePlanTables</Role>
      <ShortName>Equity Incentive Plan (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.hometrustbanking.com/role/EquityIncentivePlan</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2343307 - Disclosure - Fair Value of Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/FairValueofFinancialInstrumentsTables</Role>
      <ShortName>Fair Value of Financial Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.hometrustbanking.com/role/FairValueofFinancialInstruments</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2349308 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.hometrustbanking.com/role/Leases</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2406401 - Disclosure - Debt Securities - Available for Sale Securities Table (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/DebtSecuritiesAvailableforSaleSecuritiesTableDetails</Role>
      <ShortName>Debt Securities - Available for Sale Securities Table (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2407402 - Disclosure - Debt Securities - Schedule of Investments Classified by Contractual Maturity Date (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/DebtSecuritiesScheduleofInvestmentsClassifiedbyContractualMaturityDateDetails</Role>
      <ShortName>Debt Securities - Schedule of Investments Classified by Contractual Maturity Date (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2408403 - Disclosure - Debt Securities - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/DebtSecuritiesNarrativeDetails</Role>
      <ShortName>Debt Securities - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2409404 - Disclosure - Debt Securities - Available for Sale Securities Continuous Unrealized Loss Position Fair Value (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/DebtSecuritiesAvailableforSaleSecuritiesContinuousUnrealizedLossPositionFairValueDetails</Role>
      <ShortName>Debt Securities - Available for Sale Securities Continuous Unrealized Loss Position Fair Value (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2412405 - Disclosure - Other Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/OtherInvestmentsDetails</Role>
      <ShortName>Other Investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.hometrustbanking.com/role/OtherInvestmentsTables</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2415406 - Disclosure - Loans Held For Sale (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansHeldForSaleDetails</Role>
      <ShortName>Loans Held For Sale (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.hometrustbanking.com/role/LoansHeldForSaleTables</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2418407 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Accounts, Notes, Loans and Financing Receivable (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofAccountsNotesLoansandFinancingReceivableDetails</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans - Schedule of Accounts, Notes, Loans and Financing Receivable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2419408 - Disclosure - Loans and Allowance for Credit Losses on Loans - Financing Receivable Credit Quality Indicators, After Adoption of ASU 2016-13 (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansFinancingReceivableCreditQualityIndicatorsAfterAdoptionofASU201613Details</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans - Financing Receivable Credit Quality Indicators, After Adoption of ASU 2016-13 (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>2420409 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Past Due Financing Receivables (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofPastDueFinancingReceivablesDetails</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans - Schedule of Past Due Financing Receivables (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>2421410 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Past Due Loans Still Accruing and Nonaccruing Interest (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofPastDueLoansStillAccruingandNonaccruingInterestDetails</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans - Schedule of Past Due Loans Still Accruing and Nonaccruing Interest (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>2422411 - Disclosure - Loans and Allowance for Credit Losses on Loans - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansNarrativeDetails</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>2423412 - Disclosure - Loans and Allowance for Credit Losses on Loans - Breakdown of Provision (Benefit) For Credit Losses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansBreakdownofProvisionBenefitForCreditLossesDetails</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans - Breakdown of Provision (Benefit) For Credit Losses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>2424413 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Allowance for Credit Losses on Financing Receivables Table (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofAllowanceforCreditLossesonFinancingReceivablesTableDetails</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans - Schedule of Allowance for Credit Losses on Financing Receivables Table (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>2425414 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Ending Balances of Loans and the Related Allowance by Segment and Class (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofEndingBalancesofLoansandtheRelatedAllowancebySegmentandClassDetails</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans - Schedule of Ending Balances of Loans and the Related Allowance by Segment and Class (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>2426415 - Disclosure - Loans and Allowance for Credit Losses on Loans - Breakdown Between Loans Identified as CDAs and Non-CDAs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansBreakdownBetweenLoansIdentifiedasCDAsandNonCDAsDetails</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans - Breakdown Between Loans Identified as CDAs and Non-CDAs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>2427416 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Debt Restructurings on Financing Receivables (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofDebtRestructuringsonFinancingReceivablesDetails</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans - Schedule of Debt Restructurings on Financing Receivables (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>2428417 - Disclosure - Loans and Allowance for Credit Losses on Loans - Schedule of Troubled Debt Restructurings With Payment Default (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LoansandAllowanceforCreditLossesonLoansScheduleofTroubledDebtRestructuringsWithPaymentDefaultDetails</Role>
      <ShortName>Loans and Allowance for Credit Losses on Loans - Schedule of Troubled Debt Restructurings With Payment Default (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>2431418 - Disclosure - Net Income per Share - Schedule of Earnings Per Share, Basic and Diluted (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/NetIncomeperShareScheduleofEarningsPerShareBasicandDilutedDetails</Role>
      <ShortName>Net Income per Share - Schedule of Earnings Per Share, Basic and Diluted (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>2432419 - Disclosure - Net Income per Share - Antidilutive Stock Options (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/NetIncomeperShareAntidilutiveStockOptionsDetails</Role>
      <ShortName>Net Income per Share - Antidilutive Stock Options (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>2435420 - Disclosure - Equity Incentive Plan - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/EquityIncentivePlanNarrativeDetails</Role>
      <ShortName>Equity Incentive Plan - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>2436421 - Disclosure - Equity Incentive Plan Equity Incentive Plan - Share Based Compensation Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/EquityIncentivePlanEquityIncentivePlanShareBasedCompensationExpenseDetails</Role>
      <ShortName>Equity Incentive Plan Equity Incentive Plan - Share Based Compensation Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>2437422 - Disclosure - Equity Incentive Plan - Stock Option Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/EquityIncentivePlanStockOptionActivityDetails</Role>
      <ShortName>Equity Incentive Plan - Stock Option Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>2438423 - Disclosure - Equity Incentive Plan - Assumptions Used in Estimating Fair Value (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/EquityIncentivePlanAssumptionsUsedinEstimatingFairValueDetails</Role>
      <ShortName>Equity Incentive Plan - Assumptions Used in Estimating Fair Value (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>2439424 - Disclosure - Equity Incentive Plan - Schedule of Nonvested Restricted Stock Units Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/EquityIncentivePlanScheduleofNonvestedRestrictedStockUnitsActivityDetails</Role>
      <ShortName>Equity Incentive Plan - Schedule of Nonvested Restricted Stock Units Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>2441425 - Disclosure - Commitments and Contingencies - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/CommitmentsandContingenciesNarrativeDetails</Role>
      <ShortName>Commitments and Contingencies - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>2444426 - Disclosure - Fair Value of Financial Instruments - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/FairValueofFinancialInstrumentsScheduleofFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>2445427 - Disclosure - Fair Value of Financial Instruments - Schedule of Fair Value Measurements, Nonrecurring (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/FairValueofFinancialInstrumentsScheduleofFairValueMeasurementsNonrecurringDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Schedule of Fair Value Measurements, Nonrecurring (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>2446428 - Disclosure - Fair Value of Financial Instruments - Schedule of Fair Value, by Balance Sheet Grouping (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/FairValueofFinancialInstrumentsScheduleofFairValuebyBalanceSheetGroupingDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Schedule of Fair Value, by Balance Sheet Grouping (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>2447429 - Disclosure - Fair Value of Financial Instruments - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/FairValueofFinancialInstrumentsNarrativeDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>2450430 - Disclosure - Leases - Supplement Balance Sheet (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LeasesSupplementBalanceSheetDetails</Role>
      <ShortName>Leases - Supplement Balance Sheet (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>2451431 - Disclosure - Leases - Maturity Schedule for Finance and Operating Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LeasesMaturityScheduleforFinanceandOperatingLeasesDetails</Role>
      <ShortName>Leases - Maturity Schedule for Finance and Operating Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>2452432 - Disclosure - Leases - Schedule of Lease Cost (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LeasesScheduleofLeaseCostDetails</Role>
      <ShortName>Leases - Schedule of Lease Cost (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>2453433 - Disclosure - Leases - Supplemental Cash Flow Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LeasesSupplementalCashFlowInformationDetails</Role>
      <ShortName>Leases - Supplemental Cash Flow Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>2454434 - Disclosure - Leases - Lessor, Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LeasesLessorNarrativeDetails</Role>
      <ShortName>Leases - Lessor, Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>2455435 - Disclosure - Leases - Total Equipment Finance Operating Lease Income and Depreciation Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LeasesTotalEquipmentFinanceOperatingLeaseIncomeandDepreciationExpenseDetails</Role>
      <ShortName>Leases - Total Equipment Finance Operating Lease Income and Depreciation Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>2456436 - Disclosure - Leases - Lessor, Fiscal Year Maturity Schedule (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.hometrustbanking.com/role/LeasesLessorFiscalYearMaturityScheduleDetails</Role>
      <ShortName>Leases - Lessor, Fiscal Year Maturity Schedule (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="htbi-20220331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9999.htm</HtmlFileName>
      <LongName>Uncategorized Items - htbi-20220331.htm</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/role/uncategorizedFacts</Role>
      <ShortName>Uncategorized Items - htbi-20220331.htm</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-Q" original="htbi-20220331.htm">htbi-20220331.htm</File>
    <File>a2022-03x3110qex109b.htm</File>
    <File>a2022-03x31xhtbix10qxex106.htm</File>
    <File>a2022-03x31xhtbix10qxex109a.htm</File>
    <File>a2022-03x31xhtbix10qxex311.htm</File>
    <File>a2022-03x31xhtbix10qxex312.htm</File>
    <File>a2022-03x31xhtbix10qxex32.htm</File>
    <File>a2022-03x31xhtbixxex1010a.htm</File>
    <File>a2022-03x31xhtbixxex1011a.htm</File>
    <File>htbi-20220331.xsd</File>
    <File>htbi-20220331_cal.xml</File>
    <File>htbi-20220331_def.xml</File>
    <File>htbi-20220331_lab.xml</File>
    <File>htbi-20220331_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="3029">http://fasb.org/us-gaap/2020-01-31</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2020-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
