<?xml version="1.0" encoding="utf-8"?>
<xbrl
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  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:ffd="http://xbrl.sec.gov/ffd/2025"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
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  xmlns:xlink="http://www.w3.org/1999/xlink"
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    <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>
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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>
    <unit id="shares">
        <measure>shares</measure>
    </unit>
    <ffd:SubmissnTp contextRef="c_report" id="fee_001">S-8</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:PrevslyPdFlg contextRef="c_offering_1" id="fee_004">false</ffd:PrevslyPdFlg>
    <ffd:OfferingTableNa contextRef="c_report" id="fee_005" xsi:nil="true"/>
    <ffd:OffsetTableNa contextRef="c_report" id="fee_006">N/A</ffd:OffsetTableNa>
    <ffd:FormTp contextRef="c_report" id="fee_007">S-8</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="c_report" id="fee_008">Postal Realty Trust, Inc.</dei:EntityRegistrantName>
    <ffd:OfferingSctyTp contextRef="c_offering_1" id="fee_009">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c_offering_1" id="fee_010">Class A common, par value $0.01 per share</ffd:OfferingSctyTitl>
    <ffd:FeesOthrRuleFlg contextRef="c_offering_1" id="fee_011">true</ffd:FeesOthrRuleFlg>
    <ffd:AmtSctiesRegd
      contextRef="c_offering_1"
      decimals="0"
      id="fee_012"
      unitRef="shares">100000</ffd:AmtSctiesRegd>
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      contextRef="c_offering_1"
      decimals="INF"
      id="fee_013"
      unitRef="USD">23.17</ffd:MaxOfferingPricPerScty>
    <ffd:MaxAggtOfferingPric
      contextRef="c_offering_1"
      decimals="INF"
      id="fee_014"
      unitRef="USD">2317000.00</ffd:MaxAggtOfferingPric>
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      contextRef="c_offering_1"
      decimals="INF"
      id="fee_015"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt
      contextRef="c_offering_1"
      decimals="INF"
      id="fee_016"
      unitRef="USD">319.98</ffd:FeeAmt>
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      contextRef="c_report"
      decimals="INF"
      id="fee_017"
      unitRef="USD">2317000.00</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt
      contextRef="c_report"
      decimals="INF"
      id="fee_018"
      unitRef="USD">319.98</ffd:TtlFeeAmt>
    <ffd:TtlOffsetAmt
      contextRef="c_report"
      decimals="INF"
      id="fee_019"
      unitRef="USD">0.00</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt
      contextRef="c_report"
      decimals="INF"
      id="fee_020"
      unitRef="USD">319.98</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="c_offering_1" id="fee_021">Represents 100,000 additional shares of Class A common stock reserved for issuance under the Postal Realty Trust, Inc. 2019 Qualified Employee Stock Purchase Plan (the &#x201c;ESPP&#x201d;), pursuant to an amendment to the ESPP approved by the Company's stockholders at the Company's Annual Meeting of Stockholders held on May 15, 2026. Pursuant to Rule 416(a) under the Securities Act of 1933, as amended, this Registration Statement also covers an indeterminate number of additional shares of Class A common stock that may become issuable under the ESPP by reason of any stock dividend, stock split, recapitalization or similar transaction.&lt;br/&gt;&lt;br/&gt;Estimated solely for purposes of calculating the registration fee pursuant to Rules 457(c) and 457(h) under the Securities Act, based upon the average of the high and low sales prices of the Registrant's Class A common stock as reported on the New York Stock Exchange on August 3, 2026.</ffd:OfferingNote>
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