<?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>
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        <period>
            <startDate>2026-08-04</startDate>
            <endDate>2026-08-04</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>
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        </entity>
        <period>
            <startDate>2026-08-04</startDate>
            <endDate>2026-08-04</endDate>
        </period>
    </context>
    <context id="c_offering_3">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001759774</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>3</dei:lineNo>
                </xbrldi:typedMember>
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        </entity>
        <period>
            <startDate>2026-08-04</startDate>
            <endDate>2026-08-04</endDate>
        </period>
    </context>
    <context id="c_offering_4">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001759774</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>4</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-08-04</startDate>
            <endDate>2026-08-04</endDate>
        </period>
    </context>
    <context id="c_offering_5">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001759774</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>5</dei:lineNo>
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        </entity>
        <period>
            <startDate>2026-08-04</startDate>
            <endDate>2026-08-04</endDate>
        </period>
    </context>
    <context id="c_offering_6">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001759774</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>6</dei:lineNo>
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        </entity>
        <period>
            <startDate>2026-08-04</startDate>
            <endDate>2026-08-04</endDate>
        </period>
    </context>
    <context id="c_report">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001759774</identifier>
        </entity>
        <period>
            <startDate>2026-08-04</startDate>
            <endDate>2026-08-04</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">S-3ASR</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:OfferingTableNa contextRef="c_report" id="fee_004" xsi:nil="true"/>
    <ffd:OffsetTableNa contextRef="c_report" id="fee_005">N/A</ffd:OffsetTableNa>
    <ffd:CombinedProspectusTableNa contextRef="c_report" id="fee_006">N/A</ffd:CombinedProspectusTableNa>
    <ffd:FormTp contextRef="c_report" id="fee_007">S-3</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="c_report" id="fee_008">Postal Realty Trust, Inc.</dei:EntityRegistrantName>
    <ffd:PrevslyPdFlg contextRef="c_offering_1" id="fee_009">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c_offering_1" id="fee_010">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c_offering_1" id="fee_011">Postal Realty Trust, Inc. Class A Common Stock, $0.01 par value per share</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="c_offering_1" id="fee_012">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="c_offering_1"
      decimals="INF"
      id="fee_013"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="c_offering_2" id="fee_014">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c_offering_2" id="fee_015">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c_offering_2" id="fee_016">Postal Realty Trust, Inc. Preferred Stock, $0.01 par value per share</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="c_offering_2" id="fee_017">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="c_offering_2"
      decimals="INF"
      id="fee_018"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="c_offering_3" id="fee_019">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c_offering_3" id="fee_020">Other</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c_offering_3" id="fee_021">Postal Realty Trust, Inc. Warrants</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="c_offering_3" id="fee_022">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="c_offering_3"
      decimals="INF"
      id="fee_023"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="c_offering_4" id="fee_024">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c_offering_4" id="fee_025">Other</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c_offering_4" id="fee_026">Postal Realty Trust, Inc. Units</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="c_offering_4" id="fee_027">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="c_offering_4"
      decimals="INF"
      id="fee_028"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="c_offering_5" id="fee_029">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c_offering_5" id="fee_030">Debt</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c_offering_5" id="fee_031">Postal Realty Trust, Inc. Guarantees of Debt Securities</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="c_offering_5" id="fee_032">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="c_offering_5"
      decimals="INF"
      id="fee_033"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="c_offering_6" id="fee_034">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c_offering_6" id="fee_035">Debt</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c_offering_6" id="fee_036">Postal Realty LP. Debt Securities</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="c_offering_6" id="fee_037">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="c_offering_6"
      decimals="INF"
      id="fee_038"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:TtlOfferingAmt
      contextRef="c_report"
      decimals="INF"
      id="ixv-448"
      unitRef="USD">0.00</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt
      contextRef="c_report"
      decimals="INF"
      id="ixv-449"
      unitRef="USD">0.00</ffd:TtlFeeAmt>
    <ffd:TtlOffsetAmt
      contextRef="c_report"
      decimals="INF"
      id="ixv-450"
      unitRef="USD">0.00</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt
      contextRef="c_report"
      decimals="INF"
      id="ixv-451"
      unitRef="USD">0.00</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="c_offering_1" id="ixv-292">An unspecified number of securities or aggregate initial offering price, as applicable, is being registered as may from time to time be offered at unspecified prices. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities or that are issued in units or represented by depositary shares.&lt;br/&gt;&lt;br/&gt;In accordance with Rule 456(b) and Rule 457(r) under the Securities Act of 1933, as amended, the registrant is deferring payment of the registration fee&lt;br/&gt;&lt;br/&gt;Includes rights to acquire common stock or preferred stock of Postal Realty Trust, Inc. under any shareholder rights plan then in effect, if applicable under the terms of any such plan.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="c_offering_2" id="ixv-452">See Note 1.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="c_offering_3" id="ixv-307">An unspecified number of securities or aggregate initial offering price, as applicable, is being registered as may from time to time be offered at unspecified prices. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities or that are issued in units or represented by depositary shares.&lt;br/&gt;&lt;br/&gt;In accordance with Rule 456(b) and Rule 457(r) under the Securities Act of 1933, as amended, the registrant is deferring payment of the registration fee.&lt;br/&gt;&lt;br/&gt;The warrants covered by this Registration Statement may be preferred share warrants or common share warrants.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="c_offering_4" id="ixv-317">An unspecified number of securities or aggregate initial offering price, as applicable, is being registered as may from time to time be offered at unspecified prices. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities or that are issued in units or represented by depositary shares.&lt;br/&gt;&lt;br/&gt;In accordance with Rule 456(b) and Rule 457(r) under the Securities Act of 1933, as amended, the registrant is deferring payment of the registration fee.&lt;br/&gt;&lt;br/&gt;In U.S. dollars or the equivalent thereof denominated in one or more foreign currencies or units of two or more foreign currencies or composite currencies (such as European Currency Units).</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="c_offering_5" id="ixv-327">An unspecified number of securities or aggregate initial offering price, as applicable, is being registered as may from time to time be offered at unspecified prices. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities or that are issued in units or represented by depositary shares.&lt;br/&gt;&lt;br/&gt;In accordance with Rule 456(b) and Rule 457(r) under the Securities Act of 1933, as amended, the registrant is deferring payment of the registration fee.&lt;br/&gt;&lt;br/&gt;Postal Realty Trust, Inc. may fully and unconditionally guarantee the payment of principal of and premium (if any) and interest on debt securities offered by Postal Realty LP. No separate consideration will be received for the guarantees. Pursuant to Rule 457(n), no separate fee is payable with respect to the guarantees being registered hereby.&lt;br/&gt;&lt;br/&gt;* Additional securities (including securities to be issued by additional registrants) may be added by automatically effective post-effective amendment pursuant to Rule 413.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="c_offering_6" id="ixv-453">See Note 5.</ffd:OfferingNote>
</xbrl>
