<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.25.4</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>205</ContextCount>
  <ElementCount>472</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>79</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>9</UnitCount>
  <MyReports>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>995200090 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>995200100 - Statement - BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/StatementBalanceSheets</Role>
      <ShortName>BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>995200105 - Statement - BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/StatementBalanceSheetsParenthetical</Role>
      <ShortName>BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>995200200 - Statement - STATEMENTS OF INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/StatementStatementsOfIncome</Role>
      <ShortName>STATEMENTS OF INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>995200300 - Statement - STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/StatementStatementsOfChangesInStockholdersEquity</Role>
      <ShortName>STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>995200400 - Statement - STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/StatementStatementsOfCashFlows</Role>
      <ShortName>STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>995210101 - Disclosure - NATURE OF OPERATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureNatureOfOperations</Role>
      <ShortName>NATURE OF OPERATIONS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>995210201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPolicies</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>995210301 - Disclosure - AMERICASA ACQUISITION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureAmericasaAcquisition</Role>
      <ShortName>AMERICASA ACQUISITION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>995210401 - Disclosure - REVENUE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureRevenue</Role>
      <ShortName>REVENUE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>995210501 - Disclosure - CONSUMER LOANS RECEIVABLE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureConsumerLoansReceivable</Role>
      <ShortName>CONSUMER LOANS RECEIVABLE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995210601 - Disclosure - NOTES RECEIVABLE FROM MOBILE HOME PARKS</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureNotesReceivableFromMobileHomeParks</Role>
      <ShortName>NOTES RECEIVABLE FROM MOBILE HOME PARKS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995210701 - Disclosure - OTHER NOTES RECEIVABLE</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureOtherNotesReceivable</Role>
      <ShortName>OTHER NOTES RECEIVABLE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995210801 - Disclosure - DEALER FINANCED RECEIVABLES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureDealerFinancedReceivables</Role>
      <ShortName>DEALER FINANCED RECEIVABLES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995210901 - Disclosure - LEASES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureLeases</Role>
      <ShortName>LEASES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995211001 - Disclosure - INVENTORIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureInventories</Role>
      <ShortName>INVENTORIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995211101 - Disclosure - PROPERTY, PLANT, AND EQUIPMENT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosurePropertyPlantAndEquipment</Role>
      <ShortName>PROPERTY, PLANT, AND EQUIPMENT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995211201 - Disclosure - OTHER ASSETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureOtherAssets</Role>
      <ShortName>OTHER ASSETS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995211301 - Disclosure - ACCRUED LIABILITIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureAccruedLiabilities</Role>
      <ShortName>ACCRUED LIABILITIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995211401 - Disclosure - LINES OF CREDIT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureLinesOfCredit</Role>
      <ShortName>LINES OF CREDIT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>995211501 - Disclosure - INCOME TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureIncomeTaxes</Role>
      <ShortName>INCOME TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>995211601 - Disclosure - COMMITMENTS AND CONTINGENCIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureCommitmentsAndContingencies</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995211701 - Disclosure - EARNINGS PER SHARE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureEarningsPerShare</Role>
      <ShortName>EARNINGS PER SHARE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>995211801 - Disclosure - RELATED PARTY TRANSACTIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureRelatedPartyTransactions</Role>
      <ShortName>RELATED PARTY TRANSACTIONS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>995211901 - Disclosure - SUBSEQUENT EVENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSubsequentEvents</Role>
      <ShortName>SUBSEQUENT EVENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>995410 - Disclosure - Pay vs Performance Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/PvpDisclosure</Role>
      <ShortName>Pay vs Performance Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>995443 - Disclosure - Award Timing Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure</Role>
      <ShortName>Award Timing Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>995447 - Disclosure - Insider Trading Policies and Procedures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc</Role>
      <ShortName>Insider Trading Policies and Procedures</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure</Role>
      <ShortName>Cybersecurity Risk Management and Strategy Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>99920202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>99930203 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>99930303 - Disclosure - AMERICASA ACQUISITION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureAmericasaAcquisitionTables</Role>
      <ShortName>AMERICASA ACQUISITION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureAmericasaAcquisition</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>99930403 - Disclosure - REVENUE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureRevenueTables</Role>
      <ShortName>REVENUE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureRevenue</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>99930503 - Disclosure - CONSUMER LOANS RECEIVABLE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureConsumerLoansReceivableTables</Role>
      <ShortName>CONSUMER LOANS RECEIVABLE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureConsumerLoansReceivable</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>99930603 - Disclosure - NOTES RECEIVABLE FROM MOBILE HOME PARKS (Tables)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureNotesReceivableFromMobileHomeParksTables</Role>
      <ShortName>NOTES RECEIVABLE FROM MOBILE HOME PARKS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureNotesReceivableFromMobileHomeParks</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>99930703 - Disclosure - OTHER NOTES RECEIVABLE (Tables)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureOtherNotesReceivableTables</Role>
      <ShortName>OTHER NOTES RECEIVABLE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureOtherNotesReceivable</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>99930803 - Disclosure - DEALER FINANCED RECEIVABLES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureDealerFinancedReceivablesTables</Role>
      <ShortName>DEALER FINANCED RECEIVABLES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureDealerFinancedReceivables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>99930903 - Disclosure - LEASES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureLeasesTables</Role>
      <ShortName>LEASES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureLeases</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>99931003 - Disclosure - INVENTORIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureInventoriesTables</Role>
      <ShortName>INVENTORIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureInventories</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>99931103 - Disclosure - PROPERTY, PLANT, AND EQUIPMENT (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosurePropertyPlantAndEquipmentTables</Role>
      <ShortName>PROPERTY, PLANT, AND EQUIPMENT (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosurePropertyPlantAndEquipment</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>99931203 - Disclosure - OTHER ASSETS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureOtherAssetsTables</Role>
      <ShortName>OTHER ASSETS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureOtherAssets</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>99931303 - Disclosure - ACCRUED LIABILITIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureAccruedLiabilitiesTables</Role>
      <ShortName>ACCRUED LIABILITIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureAccruedLiabilities</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>99931503 - Disclosure - INCOME TAXES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureIncomeTaxesTables</Role>
      <ShortName>INCOME TAXES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureIncomeTaxes</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>99931703 - Disclosure - EARNINGS PER SHARE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureEarningsPerShareTables</Role>
      <ShortName>EARNINGS PER SHARE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureEarningsPerShare</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>99940101 - Disclosure - NATURE OF OPERATIONS - Segment Reporting (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureNatureOfOperationsSegmentReportingDetails</Role>
      <ShortName>NATURE OF OPERATIONS - Segment Reporting (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>99940201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash and Cash Equivalents (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash and Cash Equivalents (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>99940202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Receivables (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesReceivablesDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Receivables (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>99940203 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Leased Property (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLeasedPropertyDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Leased Property (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>99940204 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Leased Property - Future Minimum Lease Income (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesLeasedPropertyFutureMinimumLeaseIncomeDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Leased Property - Future Minimum Lease Income (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>99940205 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, plant and equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPropertyPlantAndEquipmentDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, plant and equipment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>99940206 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Intangible Assets, Net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesIntangibleAssetsNetDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Intangible Assets, Net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>99940207 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Intangible Assets, Net - Future amortization expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesIntangibleAssetsNetFutureAmortizationExpenseDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Intangible Assets, Net - Future amortization expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>99940208 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Dealer Incentive Liability, Advertising Costs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesDealerIncentiveLiabilityAdvertisingCostsDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Dealer Incentive Liability, Advertising Costs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>99940209 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Product Warranty (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesProductWarrantyDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Product Warranty (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>99940210 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair value of financial instruments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueOfFinancialInstrumentsDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair value of financial instruments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>99940211 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Share-Based Compensation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesShareBasedCompensationDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Share-Based Compensation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>99940212 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Black-Scholes-Merton option-pricing model (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesBlackScholesMertonOptionPricingModelDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Black-Scholes-Merton option-pricing model (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>99940213 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentrations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesConcentrationsDetails</Role>
      <ShortName>SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentrations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>99940301 - Disclosure - AMERICASA ACQUISITION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureAmericasaAcquisitionDetails</Role>
      <ShortName>AMERICASA ACQUISITION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureAmericasaAcquisitionTables</ParentRole>
      <Position>60</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>99940302 - Disclosure - AMERICASA ACQUISITION - Allocation of purchase consideration (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureAmericasaAcquisitionAllocationOfPurchaseConsiderationDetails</Role>
      <ShortName>AMERICASA ACQUISITION - Allocation of purchase consideration (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>99940303 - Disclosure - AMERICASA ACQUISITION - Goodwill (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureAmericasaAcquisitionGoodwillDetails</Role>
      <ShortName>AMERICASA ACQUISITION - Goodwill (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>99940401 - Disclosure - REVENUE - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureRevenueNarrativeDetails</Role>
      <ShortName>REVENUE - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>99940402 - Disclosure - REVENUE - Disaggregation of Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureRevenueDisaggregationOfRevenueDetails</Role>
      <ShortName>REVENUE - Disaggregation of Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>99940501 - Disclosure - CONSUMER LOANS RECEIVABLE - Consumer loans receivable, net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureConsumerLoansReceivableConsumerLoansReceivableNetDetails</Role>
      <ShortName>CONSUMER LOANS RECEIVABLE - Consumer loans receivable, net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>99940502 - Disclosure - CONSUMER LOANS RECEIVABLE - Allowance for loan losses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureConsumerLoansReceivableAllowanceForLoanLossesDetails</Role>
      <ShortName>CONSUMER LOANS RECEIVABLE - Allowance for loan losses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>99940503 - Disclosure - CONSUMER LOANS RECEIVABLE - Aging of consumer loans receivable (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureConsumerLoansReceivableAgingOfConsumerLoansReceivableDetails</Role>
      <ShortName>CONSUMER LOANS RECEIVABLE - Aging of consumer loans receivable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>99940504 - Disclosure - CONSUMER LOANS RECEIVABLE - Disaggregation of outstanding principal balance of consumer loans receivable (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureConsumerLoansReceivableDisaggregationOfOutstandingPrincipalBalanceOfConsumerLoansReceivableDetails</Role>
      <ShortName>CONSUMER LOANS RECEIVABLE - Disaggregation of outstanding principal balance of consumer loans receivable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>99940601 - Disclosure - NOTES RECEIVABLE FROM MOBILE HOME PARKS - Narrative (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureNotesReceivableFromMobileHomeParksNarrativeDetails</Role>
      <ShortName>NOTES RECEIVABLE FROM MOBILE HOME PARKS - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>99940602 - Disclosure - NOTES RECEIVABLE FROM MOBILE HOME PARKS - Allowance for loan losses and deferred financing fees (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureNotesReceivableFromMobileHomeParksAllowanceForLoanLossesAndDeferredFinancingFeesDetails</Role>
      <ShortName>NOTES RECEIVABLE FROM MOBILE HOME PARKS - Allowance for loan losses and deferred financing fees (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>99940603 - Disclosure - NOTES RECEIVABLE FROM MOBILE HOME PARKS - Allowance for loan losses (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureNotesReceivableFromMobileHomeParksAllowanceForLoanLossesDetails</Role>
      <ShortName>NOTES RECEIVABLE FROM MOBILE HOME PARKS - Allowance for loan losses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>99940604 - Disclosure - NOTES RECEIVABLE FROM MOBILE HOME PARKS - MHP loans receivable (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureNotesReceivableFromMobileHomeParksMhpLoansReceivableDetails</Role>
      <ShortName>NOTES RECEIVABLE FROM MOBILE HOME PARKS - MHP loans receivable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>99940605 - Disclosure - NOTES RECEIVABLE FROM MOBILE HOME PARKS - Disaggregates the outstanding principal balance of MHP receivable (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureNotesReceivableFromMobileHomeParksDisaggregatesOutstandingPrincipalBalanceOfMhpReceivableDetails</Role>
      <ShortName>NOTES RECEIVABLE FROM MOBILE HOME PARKS - Disaggregates the outstanding principal balance of MHP receivable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>99940701 - Disclosure - OTHER NOTES RECEIVABLE - Net of allowance for loan losses and deferred financing fees (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureOtherNotesReceivableNetOfAllowanceForLoanLossesAndDeferredFinancingFeesDetails</Role>
      <ShortName>OTHER NOTES RECEIVABLE - Net of allowance for loan losses and deferred financing fees (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>99940702 - Disclosure - OTHER NOTES RECEIVABLE - Allowance for loan losses (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureOtherNotesReceivableAllowanceForLoanLossesDetails</Role>
      <ShortName>OTHER NOTES RECEIVABLE - Allowance for loan losses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>99940703 - Disclosure - OTHER NOTES RECEIVABLE - Disaggregation of outstanding principal balance of Other notes receivable (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureOtherNotesReceivableDisaggregationOfOutstandingPrincipalBalanceOfOtherNotesReceivableDetails</Role>
      <ShortName>OTHER NOTES RECEIVABLE - Disaggregation of outstanding principal balance of Other notes receivable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>99940801 - Disclosure - DEALER FINANCED RECEIVABLES - Net of allowance for loan losses and deferred financing fees (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureDealerFinancedReceivablesNetOfAllowanceForLoanLossesAndDeferredFinancingFeesDetails</Role>
      <ShortName>DEALER FINANCED RECEIVABLES - Net of allowance for loan losses and deferred financing fees (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>99940802 - Disclosure - DEALER FINANCED RECEIVABLES - Allowance for loan losses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureDealerFinancedReceivablesAllowanceForLoanLossesDetails</Role>
      <ShortName>DEALER FINANCED RECEIVABLES - Allowance for loan losses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>99940901 - Disclosure - LEASES - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureLeasesNarrativeDetails</Role>
      <ShortName>LEASES - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>99940902 - Disclosure - LEASES - Future minimum lease payments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureLeasesFutureMinimumLeasePaymentsDetails</Role>
      <ShortName>LEASES - Future minimum lease payments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>99941001 - Disclosure - INVENTORIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureInventoriesDetails</Role>
      <ShortName>INVENTORIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureInventoriesTables</ParentRole>
      <Position>81</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>99941101 - Disclosure - PROPERTY, PLANT, AND EQUIPMENT (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosurePropertyPlantAndEquipmentDetails</Role>
      <ShortName>PROPERTY, PLANT, AND EQUIPMENT (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosurePropertyPlantAndEquipmentTables</ParentRole>
      <Position>82</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>99941201 - Disclosure - OTHER ASSETS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureOtherAssetsDetails</Role>
      <ShortName>OTHER ASSETS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureOtherAssetsTables</ParentRole>
      <Position>83</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>99941301 - Disclosure - ACCRUED LIABILITIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureAccruedLiabilitiesDetails</Role>
      <ShortName>ACCRUED LIABILITIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureAccruedLiabilitiesTables</ParentRole>
      <Position>84</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>99941401 - Disclosure - LINES OF CREDIT (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureLinesOfCreditDetails</Role>
      <ShortName>LINES OF CREDIT (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureLinesOfCredit</ParentRole>
      <Position>85</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>99941501 - Disclosure - INCOME TAXES - Tabular (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureIncomeTaxesTabularDetails</Role>
      <ShortName>INCOME TAXES - Tabular (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>99941502 - Disclosure - INCOME TAXES - Effective tax rate (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureIncomeTaxesEffectiveTaxRateDetails</Role>
      <ShortName>INCOME TAXES - Effective tax rate (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>87</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>99941503 - Disclosure - INCOME TAXES - Unrecognized tax benefits (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails</Role>
      <ShortName>INCOME TAXES - Unrecognized tax benefits (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>88</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>99941504 - Disclosure - INCOME TAXES - Tax payments and refunds (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureIncomeTaxesTaxPaymentsAndRefundsDetails</Role>
      <ShortName>INCOME TAXES - Tax payments and refunds (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>89</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>99941601 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureCommitmentsAndContingenciesDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureCommitmentsAndContingencies</ParentRole>
      <Position>90</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>99941602 - Disclosure - COMMITMENTS AND CONTINGENCIES - Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureCommitmentsAndContingenciesLeasesDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES - Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>91</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>99941603 - Disclosure - COMMITMENTS AND CONTINGENCIES - Legal Matters (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureCommitmentsAndContingenciesLegalMattersDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES - Legal Matters (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>92</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>99941701 - Disclosure - EARNINGS PER SHARE- Tabular (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureEarningsPerShareTabularDetails</Role>
      <ShortName>EARNINGS PER SHARE- Tabular (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>93</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>99941702 - Disclosure - EARNINGS PER SHARE - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureEarningsPerShareNarrativeDetails</Role>
      <ShortName>EARNINGS PER SHARE - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>94</Position>
    </Report>
    <Report instance="legh-20251231x10k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>99941801 - Disclosure - RELATED PARTY TRANSACTIONS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://legacyhousingcorp.com/role/DisclosureRelatedPartyTransactionsDetails</Role>
      <ShortName>RELATED PARTY TRANSACTIONS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://legacyhousingcorp.com/role/DisclosureRelatedPartyTransactions</ParentRole>
      <Position>95</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>legh-20251231.xsd</File>
    <File>legh-20251231_cal.xml</File>
    <File>legh-20251231_def.xml</File>
    <File>legh-20251231_lab.xml</File>
    <File>legh-20251231_pre.xml</File>
    <File doctype="10-K" isDefinitelyFs="true" isUsgaap="true" original="legh-20251231x10k.htm">legh-20251231x10k.htm</File>
  </InputFiles>
  <SupplementalFiles>
    <File>legh-20251231x10k001.jpg</File>
    <File>legh-20251231x10k002.jpg</File>
    <File>legh-20251231x10k003.jpg</File>
    <File>legh-20251231x10k005.jpg</File>
    <File>legh-20251231x10k006.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="12">http://fasb.org/srt/2024</BaseTaxonomy>
    <BaseTaxonomy items="828">http://fasb.org/us-gaap/2024</BaseTaxonomy>
    <BaseTaxonomy items="9">http://xbrl.sec.gov/cyd/2024</BaseTaxonomy>
    <BaseTaxonomy items="38">http://xbrl.sec.gov/dei/2024</BaseTaxonomy>
    <BaseTaxonomy items="11">http://xbrl.sec.gov/ecd/2024</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
