<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:ffd="http://xbrl.sec.gov/ffd/2025"
  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"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <link:schemaRef
      xlink:href="https://xbrl.sec.gov/ffd/2025/ffd-2025.xsd"
      xlink:type="simple"/>
    <context id="c_offering_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001759774</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-08-03</startDate>
            <endDate>2026-08-03</endDate>
        </period>
    </context>
    <context id="c_offering_2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001759774</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>2</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-08-03</startDate>
            <endDate>2026-08-03</endDate>
        </period>
    </context>
    <context id="c_report">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001759774</identifier>
        </entity>
        <period>
            <startDate>2026-08-03</startDate>
            <endDate>2026-08-03</endDate>
        </period>
    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <ffd:SubmissnTp contextRef="c_report" id="fee_001">424B5</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="c_report" id="fee_002">EX-FILING FEES</ffd:FeeExhibitTp>
    <dei:EntityCentralIndexKey contextRef="c_report" id="fee_003">0001759774</dei:EntityCentralIndexKey>
    <ffd:RegnFileNb contextRef="c_report" id="fee_004">333-297980</ffd:RegnFileNb>
    <ffd:OfferingTableNa contextRef="c_report" id="fee_005" xsi:nil="true"/>
    <ffd:OffsetTableNa contextRef="c_report" id="fee_006">N/A</ffd:OffsetTableNa>
    <ffd:CombinedProspectusTableNa contextRef="c_report" id="fee_007">N/A</ffd:CombinedProspectusTableNa>
    <ffd:FormTp contextRef="c_report" id="fee_008">S-3</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="c_report" id="fee_009">Postal Realty Trust, Inc.</dei:EntityRegistrantName>
    <ffd:PrevslyPdFlg contextRef="c_offering_1" id="fee_010">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c_offering_1" id="ixv-344">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c_offering_1" id="ixv-345">Class A common, par value $0.01 per share</ffd:OfferingSctyTitl>
    <ffd:Rule457oFlg contextRef="c_offering_1" id="fee_011">true</ffd:Rule457oFlg>
    <ffd:MaxAggtOfferingPric
      contextRef="c_offering_1"
      decimals="INF"
      id="ixv-347"
      unitRef="USD">14015953.00</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate
      contextRef="c_offering_1"
      decimals="INF"
      id="ixv-348"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt
      contextRef="c_offering_1"
      decimals="INF"
      id="ixv-349"
      unitRef="USD">1935.60</ffd:FeeAmt>
    <ffd:OfferingSctyTp contextRef="c_offering_2" id="ixv-350">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c_offering_2" id="ixv-351">Unallocated (Universal) Shelf</ffd:OfferingSctyTitl>
    <ffd:Rule415a6Flg contextRef="c_offering_2" id="fee_012">true</ffd:Rule415a6Flg>
    <ffd:MaxAggtOfferingPric
      contextRef="c_offering_2"
      decimals="INF"
      id="ixv-353"
      unitRef="USD">285984047.00</ffd:MaxAggtOfferingPric>
    <ffd:CfwdFormTp contextRef="c_offering_2" id="ixv-354">S-3</ffd:CfwdFormTp>
    <ffd:CfwdPrrFileNb contextRef="c_offering_2" id="ixv-355">333-275134</ffd:CfwdPrrFileNb>
    <ffd:CfwdPrrFctvDt contextRef="c_offering_2" id="ixv-356">2023-10-30</ffd:CfwdPrrFctvDt>
    <ffd:CfwdPrevslyPdFee
      contextRef="c_offering_2"
      decimals="INF"
      id="ixv-357"
      unitRef="USD">27070.35</ffd:CfwdPrevslyPdFee>
    <ffd:TtlOfferingAmt
      contextRef="c_report"
      decimals="INF"
      id="ixv-358"
      unitRef="USD">300000000.00</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt
      contextRef="c_report"
      decimals="INF"
      id="ixv-359"
      unitRef="USD">1935.60</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt
      contextRef="c_report"
      decimals="INF"
      id="ixv-360"
      unitRef="USD">0.00</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt
      contextRef="c_report"
      decimals="INF"
      id="ixv-361"
      unitRef="USD">0.00</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt
      contextRef="c_report"
      decimals="INF"
      id="ixv-362"
      unitRef="USD">1935.60</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="c_offering_1" id="ixv-363">The Registrant previously registered $500,000,000 in aggregate offering price of securities pursuant to the Registration Statement on Form S-3 (No. 333-275134) filed with the SEC on October 23, 2023 and declared effective on October 30, 2023 (the &#x201c;2023 Registration Statement&#x201d;). Pursuant to Rule 415(a)(6) under the Securities Act, the Registrant is carrying forward to this Registration Statement $285,984,047 in aggregate offering price of securities that were initially registered under the 2023 Registration Statement and remain unsold (the &#x201c;Unsold Securities&#x201d;). The Registrant previously paid a filing fee of $27,070.35 with respect to the Unsold Securities (based on the filing fee rate in effect at the time of the filing of the 2023 Registration Statement). A filing fee of $1,935.60 with respect to the remaining $14,015,953 of securities registered hereunder is being paid herewith.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="c_offering_2" id="ixv-364">See Note 1.</ffd:OfferingNote>
</xbrl>
