<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xml:lang="en-US"
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:ffd="http://xbrl.sec.gov/ffd/2026"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef
      xlink:href="https://xbrl.sec.gov/ffd/2026/ffd-2026.xsd"
      xlink:type="simple"/>
    <context id="c-1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000014846</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-06-11</startDate>
            <endDate>2026-06-11</endDate>
        </period>
    </context>
    <context id="c-2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000014846</identifier>
        </entity>
        <period>
            <startDate>2026-06-11</startDate>
            <endDate>2026-06-11</endDate>
        </period>
    </context>
    <unit id="shares">
        <measure>shares</measure>
    </unit>
    <unit id="usd">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="number">
        <measure>pure</measure>
    </unit>
    <dei:EntityCentralIndexKey contextRef="c-2" id="f-16">0000014846</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="c-2" id="f-17">BRT Apartments Corp.</dei:EntityRegistrantName>
    <ffd:FormTp contextRef="c-2" id="f-18">S-8</ffd:FormTp>
    <ffd:SubmissnTp contextRef="c-2" id="f-19">S-8</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="c-2" id="f-20">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:OffsetTableNa contextRef="c-2" id="f-21">N/A</ffd:OffsetTableNa>
    <ffd:PrevslyPdFlg contextRef="c-1" id="f-1">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c-1" id="f-2">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c-1" id="f-3">Common stock, par value$0.01 per share</ffd:OfferingSctyTitl>
    <ffd:FeesOthrRuleFlg contextRef="c-1" id="f-4">true</ffd:FeesOthrRuleFlg>
    <ffd:AmtSctiesRegd contextRef="c-1" decimals="0" id="f-5" unitRef="shares">1000000</ffd:AmtSctiesRegd>
    <ffd:MaxOfferingPricPerScty contextRef="c-1" decimals="2" id="f-6" unitRef="usd">14.66</ffd:MaxOfferingPricPerScty>
    <ffd:MaxAggtOfferingPric contextRef="c-1" decimals="0" id="f-7" unitRef="usd">14660000</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate contextRef="c-1" decimals="7" id="f-8" unitRef="number">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt contextRef="c-1" decimals="0" id="f-9" unitRef="usd">2025</ffd:FeeAmt>
    <ffd:TtlOfferingAmt contextRef="c-2" decimals="0" id="f-10" unitRef="usd">14660000</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="c-2" decimals="0" id="f-11" unitRef="usd">2025</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt contextRef="c-2" decimals="0" id="f-12" unitRef="usd">0</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt contextRef="c-2" decimals="0" id="f-13" unitRef="usd">0</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="c-2" decimals="0" id="f-14" unitRef="usd">2025</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="c-1" id="f-15">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:101%;padding-left:3.02pt"&gt;Pursuant to Rule 416(a) of the Securities Act of 1933, as amended, this Registration Statements also covers additional shares of common stock which may become issuable by reason of any stock split, stock dividend, or other similar transaction.&lt;/span&gt;&lt;div style="margin-top:4pt;padding-left:51pt;padding-right:33.25pt;text-indent:-13.5pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:101%"&gt;(2)&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:101%;padding-left:3.02pt"&gt;Estimated solely for the purpose of calculating the amount of the registration fee pursuant to Rule 457 (c) and (h) under the Securities Act.  The proposed maximum offering price per unit, proposed maximum aggregate offering price and the amount of the registration fee are based on the average of the high and low prices of the Registrant&#x2019;s common stock on the New York Stock Exchange on June 8, 2026.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top:4pt;padding-left:51pt;padding-right:33.25pt;text-indent:-13.5pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:101%"&gt;(3)&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:101%;padding-left:3.02pt"&gt;Represents the number of shares of common stock, par value $0.01 per share, of the Registrant issuable under the Registrant&#x2019;s 2026 Incentive Plan (the "Plan"). Shares of common stock issuable under the Plan include, among other things, awards of restricted stock and shares of common stock issuable pursuant to stock options and restricted stock units under the Plan.&lt;/span&gt;&lt;/div&gt;</ffd:OfferingNote>
</xbrl>
