<?xml version='1.0' encoding='UTF-8'?>
<FilingSummary>
  <Version>3.7.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>41</ContextCount>
  <ElementCount>126</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>14</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>101 - Document - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document And Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>102 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/ConsolidatedBalanceSheets</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>103 - Statement - CONSOLIDATED BALANCE SHEETS [Parenthetical]</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/ConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS [Parenthetical]</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>104 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/ConsolidatedStatementsOfOperations</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF OPERATIONS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>105 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/ConsolidatedStatementsOfCashFlows</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>106 - Disclosure - BASIS OF PRESENTATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/BasisOfPresentation</Role>
      <ShortName>BASIS OF PRESENTATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>107 - Disclosure - RECEIVABLES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/Receivables</Role>
      <ShortName>RECEIVABLES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>108 - Disclosure - PROPERTY, PLANT AND EQUIPMENT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/PropertyPlantAndEquipment</Role>
      <ShortName>PROPERTY, PLANT AND EQUIPMENT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>109 - Disclosure - OTHER ASSETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/OtherAssets</Role>
      <ShortName>OTHER ASSETS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>110 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED EXPENSES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/AccountsPayableAndAccruedExpenses</Role>
      <ShortName>ACCOUNTS PAYABLE AND ACCRUED EXPENSES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>111 - Disclosure - OTHER LIABILITIES AND DEFERRED REVENUE; OTHER REVENUES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/OtherLiabilitiesAndDeferredRevenueOtherRevenues</Role>
      <ShortName>OTHER LIABILITIES AND DEFERRED REVENUE; OTHER REVENUES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>112 - Disclosure - BENEFIT PLANS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/BenefitPlans</Role>
      <ShortName>BENEFIT PLANS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>113 - Disclosure - INFORMATION ABOUT THE COMPANY’S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/InformationAboutCompanysOperationsInDifferentIndustrySegments</Role>
      <ShortName>INFORMATION ABOUT THE COMPANY’S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>114 - Disclosure - BASIS OF PRESENTATION (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/BasisOfPresentationPolicies</Role>
      <ShortName>BASIS OF PRESENTATION (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>115 - Disclosure - RECEIVABLES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/ReceivablesTables</Role>
      <ShortName>RECEIVABLES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/Receivables</ParentRole>
      <Position>15</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>116 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/PropertyPlantAndEquipmentTables</Role>
      <ShortName>PROPERTY, PLANT AND EQUIPMENT (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/PropertyPlantAndEquipment</ParentRole>
      <Position>16</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>117 - Disclosure - OTHER ASSETS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/OtherAssetsTables</Role>
      <ShortName>OTHER ASSETS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/OtherAssets</ParentRole>
      <Position>17</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>118 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/AccountsPayableAndAccruedExpensesTables</Role>
      <ShortName>ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/AccountsPayableAndAccruedExpenses</ParentRole>
      <Position>18</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>119 - Disclosure - OTHER LIABILITIES AND DEFERRED REVENUE; OTHER REVENUES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/OtherLiabilitiesAndDeferredRevenueOtherRevenuesTables</Role>
      <ShortName>OTHER LIABILITIES AND DEFERRED REVENUE; OTHER REVENUES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/OtherLiabilitiesAndDeferredRevenueOtherRevenues</ParentRole>
      <Position>19</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>120 - Disclosure - INFORMATION ABOUT THE COMPANY’S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/InformationAboutCompanysOperationsInDifferentIndustrySegmentsTables</Role>
      <ShortName>INFORMATION ABOUT THE COMPANY’S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/InformationAboutCompanysOperationsInDifferentIndustrySegments</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>121 - Disclosure - RECEIVABLES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/ReceivablesDetails</Role>
      <ShortName>RECEIVABLES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/ReceivablesTables</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>122 - Disclosure - RECEIVABLES (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/ReceivablesDetailsTextual</Role>
      <ShortName>RECEIVABLES (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/ReceivablesTables</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>123 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/PropertyPlantAndEquipmentDetails</Role>
      <ShortName>PROPERTY, PLANT AND EQUIPMENT (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/PropertyPlantAndEquipmentTables</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>124 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/PropertyPlantAndEquipmentDetailsTextual</Role>
      <ShortName>PROPERTY, PLANT AND EQUIPMENT (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/PropertyPlantAndEquipmentTables</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>125 - Disclosure - OTHER ASSETS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/OtherAssetsDetails</Role>
      <ShortName>OTHER ASSETS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/OtherAssetsTables</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>126 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/AccountsPayableAndAccruedExpensesDetails</Role>
      <ShortName>ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/AccountsPayableAndAccruedExpensesTables</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>127 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/AccountsPayableAndAccruedExpensesDetailsTextual</Role>
      <ShortName>ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/AccountsPayableAndAccruedExpensesTables</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>128 - Disclosure - OTHER LIABILITIES AND DEFERRED REVENUE; OTHER REVENUES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/OtherLiabilitiesAndDeferredRevenueOtherRevenuesDetails</Role>
      <ShortName>OTHER LIABILITIES AND DEFERRED REVENUE; OTHER REVENUES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/OtherLiabilitiesAndDeferredRevenueOtherRevenuesTables</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>129 - Disclosure - OTHER LIABILITIES AND DEFERRED REVENUE; OTHER REVENUES (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/OtherLiabilitiesAndDeferredRevenueOtherRevenuesDetailsTextual</Role>
      <ShortName>OTHER LIABILITIES AND DEFERRED REVENUE; OTHER REVENUES (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/OtherLiabilitiesAndDeferredRevenueOtherRevenuesTables</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>130 - Disclosure - BENEFIT PLANS (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/BenefitPlansDetailsTextual</Role>
      <ShortName>BENEFIT PLANS (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/BenefitPlans</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="axr-20170731.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>131 - Disclosure - INFORMATION ABOUT THE COMPANY’S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.amrepcorp.com/role/InformationAboutCompanysOperationsInDifferentIndustrySegmentsDetails</Role>
      <ShortName>INFORMATION ABOUT THE COMPANY’S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.amrepcorp.com/role/InformationAboutCompanysOperationsInDifferentIndustrySegmentsTables</ParentRole>
      <Position>31</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>axr-20170731.xml</File>
    <File>axr-20170731.xsd</File>
    <File>axr-20170731_cal.xml</File>
    <File>axr-20170731_def.xml</File>
    <File>axr-20170731_lab.xml</File>
    <File>axr-20170731_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies/>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
