<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.19.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>489</ContextCount>
  <ElementCount>269</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>125</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000 - Document - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-document-and-entity-information</Role>
      <ShortName>Document And Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Current Period Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited-parentheticals</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>003 - Statement - Condensed Consolidated Statements of Operations (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-condensed-consolidated-statements-of-operations-unaudited</Role>
      <ShortName>Condensed Consolidated Statements of Operations (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>004 - Statement - Condensed Consolidated Statement of Changes in Equity (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-condensed-consolidated-statement-of-changes-in-equity-unaudited</Role>
      <ShortName>Condensed Consolidated Statement of Changes in Equity (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>005 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-condensed-consolidated-statements-of-cash-flows-unaudited</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>006 - Disclosure - Supplemental Disclosure of Cash Flow Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-supplemental-disclosure-of-cash-flow-information</Role>
      <ShortName>Supplemental Disclosure of Cash Flow Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>007 - Disclosure - Note 1 - Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-1-basis-of-presentation</Role>
      <ShortName>Note 1 - Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>008 - Disclosure - Note 2 - Stock Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-2-stock-compensation-</Role>
      <ShortName>Note 2 - Stock Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>009 - Disclosure - Note 3 - Interest</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-3-interest</Role>
      <ShortName>Note 3 - Interest</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>010 - Disclosure - Note 4 - Reduction of Inventory to Fair Value</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-4-reduction-of-inventory-to-fair-value</Role>
      <ShortName>Note 4 - Reduction of Inventory to Fair Value</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>011 - Disclosure - Note 5 - Variable Interest Entities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-5-variable-interest-entities</Role>
      <ShortName>Note 5 - Variable Interest Entities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>012 - Disclosure - Note 6 - Warranty Costs</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-6-warranty-costs</Role>
      <ShortName>Note 6 - Warranty Costs</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>013 - Disclosure - Note 7 - Commitments and Contingent Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-7-commitments-and-contingent-liabilities</Role>
      <ShortName>Note 7 - Commitments and Contingent Liabilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>014 - Disclosure - Note 8 - Cash and Cash Equivalents, Restricted Cash and Cash Equivalents and Customer's Deposits</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-8-cash-and-cash-equivalents-restricted-cash-and-cash-equivalents-and-customers-deposits</Role>
      <ShortName>Note 8 - Cash and Cash Equivalents, Restricted Cash and Cash Equivalents and Customer's Deposits</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>015 - Disclosure - Note 9 - Mortgage Loans Held for Sale</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-9-mortgage-loans-held-for-sale</Role>
      <ShortName>Note 9 - Mortgage Loans Held for Sale</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>016 - Disclosure - Note 10 - Mortgages</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-10-mortgages</Role>
      <ShortName>Note 10 - Mortgages</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>017 - Disclosure - Note 11 - Senior Notes and Credit Facilities</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-11-senior-notes-and-credit-facilities</Role>
      <ShortName>Note 11 - Senior Notes and Credit Facilities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>018 - Disclosure - Note 12 - Per Share Calculations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-12-per-share-calculations</Role>
      <ShortName>Note 12 - Per Share Calculations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>019 - Disclosure - Note 13 - Preferred Stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-13-preferred-stock</Role>
      <ShortName>Note 13 - Preferred Stock</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>020 - Disclosure - Note 14 - Common Stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-14-common-stock-</Role>
      <ShortName>Note 14 - Common Stock</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>021 - Disclosure - Note 15 - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-15-income-taxes</Role>
      <ShortName>Note 15 - Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>022 - Disclosure - Note 16 - Operating and Reporting Segments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-16-operating-and-reporting-segments</Role>
      <ShortName>Note 16 - Operating and Reporting Segments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>023 - Disclosure - Note 17 - Investments in Unconsolidated Homebuilding and Land Development Joint Ventures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-17-investments-in-unconsolidated-homebuilding-and-land-development-joint-ventures</Role>
      <ShortName>Note 17 - Investments in Unconsolidated Homebuilding and Land Development Joint Ventures</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>024 - Disclosure - Note 18 - Recent Accounting Pronouncements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-18-recent-accounting-pronouncements</Role>
      <ShortName>Note 18 - Recent Accounting Pronouncements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>025 - Disclosure - Note 19 - Fair Value of Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-19-fair-value-of-financial-instruments</Role>
      <ShortName>Note 19 - Fair Value of Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>026 - Disclosure - Note 20 - Transactions With Related Parties</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-20-transactions-with-related-parties</Role>
      <ShortName>Note 20 - Transactions With Related Parties</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>027 - Disclosure - Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-significant-accounting-policies-policies</Role>
      <ShortName>Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-18-recent-accounting-pronouncements</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>028 - Disclosure - Note 3 - Interest (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-3-interest-tables</Role>
      <ShortName>Note 3 - Interest (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-3-interest</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>029 - Disclosure - Note 6 - Warranty Costs (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-6-warranty-costs-tables</Role>
      <ShortName>Note 6 - Warranty Costs (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-6-warranty-costs</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>030 - Disclosure - Note 9 - Mortgage Loans Held for Sale (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-9-mortgage-loans-held-for-sale-tables</Role>
      <ShortName>Note 9 - Mortgage Loans Held for Sale (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-9-mortgage-loans-held-for-sale</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>031 - Disclosure - Note 11 - Senior Notes and Credit Facilities (Tables)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-11-senior-notes-and-credit-facilities-tables</Role>
      <ShortName>Note 11 - Senior Notes and Credit Facilities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-11-senior-notes-and-credit-facilities</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>032 - Disclosure - Note 16 - Operating and Reporting Segments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-16-operating-and-reporting-segments-tables</Role>
      <ShortName>Note 16 - Operating and Reporting Segments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-16-operating-and-reporting-segments</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>033 - Disclosure - Note 17 - Investments in Unconsolidated Homebuilding and Land Development Joint Ventures (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-17-investments-in-unconsolidated-homebuilding-and-land-development-joint-ventures-tables</Role>
      <ShortName>Note 17 - Investments in Unconsolidated Homebuilding and Land Development Joint Ventures (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-17-investments-in-unconsolidated-homebuilding-and-land-development-joint-ventures</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>034 - Disclosure - Note 19 - Fair Value of Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-19-fair-value-of-financial-instruments-tables</Role>
      <ShortName>Note 19 - Fair Value of Financial Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-19-fair-value-of-financial-instruments</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>035 - Disclosure - Supplemental Disclosure of Cash Flow Information (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-supplemental-disclosure-of-cash-flow-information-details-textual</Role>
      <ShortName>Supplemental Disclosure of Cash Flow Information (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-supplemental-disclosure-of-cash-flow-information</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>036 - Disclosure - Note 1 - Basis of Presentation (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-1-basis-of-presentation-details-textual</Role>
      <ShortName>Note 1 - Basis of Presentation (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-1-basis-of-presentation</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>037 - Disclosure - Note 2 - Stock Compensation (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-2-stock-compensation-details-textual</Role>
      <ShortName>Note 2 - Stock Compensation (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-2-stock-compensation-</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>038 - Disclosure - Note 3 - Interest (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-3-interest-details-textual</Role>
      <ShortName>Note 3 - Interest (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-3-interest-tables</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>039 - Disclosure - Note 3 - Interest - Interest Costs Incurred, Expensed and Capitalized (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-3-interest-interest-costs-incurred-expensed-and-capitalized-details</Role>
      <ShortName>Note 3 - Interest - Interest Costs Incurred, Expensed and Capitalized (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>040 - Disclosure - Note 3 - Interest - Cash Paid for Interest, Net of Capitalized Interest (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-3-interest-cash-paid-for-interest-net-of-capitalized-interest-details</Role>
      <ShortName>Note 3 - Interest - Cash Paid for Interest, Net of Capitalized Interest (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>041 - Disclosure - Note 4 - Reduction of Inventory to Fair Value (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-4-reduction-of-inventory-to-fair-value-details-textual</Role>
      <ShortName>Note 4 - Reduction of Inventory to Fair Value (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-4-reduction-of-inventory-to-fair-value</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>042 - Disclosure - Note 5 - Variable Interest Entities (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-5-variable-interest-entities-details-textual</Role>
      <ShortName>Note 5 - Variable Interest Entities (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-5-variable-interest-entities</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>043 - Disclosure - Note 6 - Warranty Costs (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-6-warranty-costs-details-textual</Role>
      <ShortName>Note 6 - Warranty Costs (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-6-warranty-costs-tables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>044 - Disclosure - Note 6 - Warranty Costs - Warranty and General Liability Reserve (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-6-warranty-costs-warranty-and-general-liability-reserve-details</Role>
      <ShortName>Note 6 - Warranty Costs - Warranty and General Liability Reserve (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>045 - Disclosure - Note 7 - Commitments and Contingent Liabilities (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-7-commitments-and-contingent-liabilities-details-textual</Role>
      <ShortName>Note 7 - Commitments and Contingent Liabilities (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-7-commitments-and-contingent-liabilities</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>046 - Disclosure - Note 8 - Cash and Cash Equivalents, Restricted Cash and Cash Equivalents and Customer's Deposits (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-8-cash-and-cash-equivalents-restricted-cash-and-cash-equivalents-and-customers-deposits-details-textual</Role>
      <ShortName>Note 8 - Cash and Cash Equivalents, Restricted Cash and Cash Equivalents and Customer's Deposits (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-8-cash-and-cash-equivalents-restricted-cash-and-cash-equivalents-and-customers-deposits</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>047 - Disclosure - Note 9 - Mortgage Loans Held for Sale (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-9-mortgage-loans-held-for-sale-details-textual</Role>
      <ShortName>Note 9 - Mortgage Loans Held for Sale (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-9-mortgage-loans-held-for-sale-tables</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>048 - Disclosure - Note 9 - Mortgage Loans Held for Sale - Loan Origination Reserves (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-9-mortgage-loans-held-for-sale-loan-origination-reserves-details</Role>
      <ShortName>Note 9 - Mortgage Loans Held for Sale - Loan Origination Reserves (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>049 - Disclosure - Note 10 - Mortgages (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-10-mortgages-details-textual</Role>
      <ShortName>Note 10 - Mortgages (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-10-mortgages</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>050 - Disclosure - Note 11 - Senior Notes and Credit Facilities (Details Textual)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-11-senior-notes-and-credit-facilities-details-textual</Role>
      <ShortName>Note 11 - Senior Notes and Credit Facilities (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-11-senior-notes-and-credit-facilities-tables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>051 - Disclosure - Note 11 - Senior Notes and Credit Facilities - Senior Notes and Credit Facilities Balances (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-11-senior-notes-and-credit-facilities-senior-notes-and-credit-facilities-balances-details</Role>
      <ShortName>Note 11 - Senior Notes and Credit Facilities - Senior Notes and Credit Facilities Balances (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>052 - Disclosure - Note 11 - Senior Notes and Credit Facilities - Senior Notes and Credit Facilities Balances (Details) (Parentheticals)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-11-senior-notes-and-credit-facilities-senior-notes-and-credit-facilities-balances-details-parentheticals</Role>
      <ShortName>Note 11 - Senior Notes and Credit Facilities - Senior Notes and Credit Facilities Balances (Details) (Parentheticals)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>053 - Disclosure - Note 12 - Per Share Calculations (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-12-per-share-calculations-details-textual</Role>
      <ShortName>Note 12 - Per Share Calculations (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-12-per-share-calculations</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>054 - Disclosure - Note 13 - Preferred Stock (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-13-preferred-stock-details-textual</Role>
      <ShortName>Note 13 - Preferred Stock (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-13-preferred-stock</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>055 - Disclosure - Note 14 - Common Stock (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-14-common-stock-details-textual</Role>
      <ShortName>Note 14 - Common Stock (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-14-common-stock-</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>056 - Disclosure - Note 15 - Income Taxes (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-15-income-taxes-details-textual</Role>
      <ShortName>Note 15 - Income Taxes (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-15-income-taxes</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>057 - Disclosure - Note 16 - Operating and Reporting Segments (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-16-operating-and-reporting-segments-details-textual</Role>
      <ShortName>Note 16 - Operating and Reporting Segments (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-16-operating-and-reporting-segments-tables</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>058 - Disclosure - Note 16 - Operating and Reporting Segments - Financial Information Relating to Segment Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-16-operating-and-reporting-segments-financial-information-relating-to-segment-operations-details</Role>
      <ShortName>Note 16 - Operating and Reporting Segments - Financial Information Relating to Segment Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>059 - Disclosure - Note 16 - Operating and Reporting Segments - Financial Information Relating to Segment Financial Position (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-16-operating-and-reporting-segments-financial-information-relating-to-segment-financial-position-details</Role>
      <ShortName>Note 16 - Operating and Reporting Segments - Financial Information Relating to Segment Financial Position (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>060 - Disclosure - Note 17 - Investments in Unconsolidated Homebuilding and Land Development Joint Ventures (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-17-investments-in-unconsolidated-homebuilding-and-land-development-joint-ventures-details-textual</Role>
      <ShortName>Note 17 - Investments in Unconsolidated Homebuilding and Land Development Joint Ventures (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-17-investments-in-unconsolidated-homebuilding-and-land-development-joint-ventures-tables</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>061 - Disclosure - Note 17 - Investments in Unconsolidated Homebuilding and Land Development Joint Ventures - Unconsolidated Homebuilding and Land Development Joint Ventures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-17-investments-in-unconsolidated-homebuilding-and-land-development-joint-ventures-unconsolidated-homebuilding-and-land-development-joint-ventures-details</Role>
      <ShortName>Note 17 - Investments in Unconsolidated Homebuilding and Land Development Joint Ventures - Unconsolidated Homebuilding and Land Development Joint Ventures (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>062 - Disclosure - Note 19 - Fair Value of Financial Instruments (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-19-fair-value-of-financial-instruments-details-textual</Role>
      <ShortName>Note 19 - Fair Value of Financial Instruments (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-19-fair-value-of-financial-instruments-tables</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>063 - Disclosure - Note 19 - Fair Value of Financial Instruments - Financial Instruments Measured at Fair Value on a Recurring Basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-19-fair-value-of-financial-instruments-financial-instruments-measured-at-fair-value-on-a-recurring-basis-details</Role>
      <ShortName>Note 19 - Fair Value of Financial Instruments - Financial Instruments Measured at Fair Value on a Recurring Basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>064 - Disclosure - Note 19 - Fair Value of Financial Instruments - Changes in Fair Values Included in Income (Loss) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-19-fair-value-of-financial-instruments-changes-in-fair-values-included-in-income-loss-details</Role>
      <ShortName>Note 19 - Fair Value of Financial Instruments - Changes in Fair Values Included in Income (Loss) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>065 - Disclosure - Note 19 - Fair Value of Financial Instruments - Assets Measured at Fair Value on a Nonrecurring Basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-19-fair-value-of-financial-instruments-assets-measured-at-fair-value-on-a-nonrecurring-basis-details</Role>
      <ShortName>Note 19 - Fair Value of Financial Instruments - Assets Measured at Fair Value on a Nonrecurring Basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>066 - Disclosure - Note 19 - Fair Value of Financial Instruments - Fair Value of Notes (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-19-fair-value-of-financial-instruments-fair-value-of-notes-details</Role>
      <ShortName>Note 19 - Fair Value of Financial Instruments - Fair Value of Notes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>067 - Disclosure - Note 19 - Fair Value of Financial Instruments - Fair Value of Notes (Details) (Parentheticals)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-19-fair-value-of-financial-instruments-fair-value-of-notes-details-parentheticals</Role>
      <ShortName>Note 19 - Fair Value of Financial Instruments - Fair Value of Notes (Details) (Parentheticals)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="hov-20190430.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>068 - Disclosure - Note 20 - Transactions With Related Parties (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.khov.com/20190430/role/statement-note-20-transactions-with-related-parties-details-textual</Role>
      <ShortName>Note 20 - Transactions With Related Parties (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.khov.com/20190430/role/statement-note-20-transactions-with-related-parties</ParentRole>
      <Position>69</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>hov-20190430.xml</File>
    <File>hov-20190430.xsd</File>
    <File>hov-20190430_cal.xml</File>
    <File>hov-20190430_def.xml</File>
    <File>hov-20190430_lab.xml</File>
    <File>hov-20190430_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://fasb.org/srt/2019-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2018-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/us-gaap/2019-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
