<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:us-gaap="http://fasb.org/us-gaap/2025"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="rdi-20251231.xsd" xlink:type="simple"/>
    <context id="Duration_1_1_2025_To_12_31_2025_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassBMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000716634</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassBMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassAMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000716634</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassAMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="As_Of_6_30_2025">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000716634</identifier>
        </entity>
        <period>
            <instant>2025-06-30</instant>
        </period>
    </context>
    <context id="As_Of_3_30_2026_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassBMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000716634</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassBMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-30</instant>
        </period>
    </context>
    <context id="As_Of_3_30_2026_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassAMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000716634</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassAMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-30</instant>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000716634</identifier>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <unit id="Unit12">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="Unit1">
        <measure>shares</measure>
    </unit>
    <dei:AmendmentFlag
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-18ee24a2-9cd4-4bb7-80be-07ff83807971">true</dei:AmendmentFlag>
    <dei:DocumentFiscalPeriodFocus
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-377e927d-60b2-428e-8242-5939369c1b75">FY</dei:DocumentFiscalPeriodFocus>
    <dei:DocumentFiscalYearFocus
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-7935cfcf-693c-455a-bcae-4812f6176b22">2025</dei:DocumentFiscalYearFocus>
    <dei:EntityCentralIndexKey
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-c202660a-99d0-4b9f-9272-23b46b4fe5aa">0000716634</dei:EntityCentralIndexKey>
    <dei:EntityCurrentReportingStatus
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-012f81eb-58d0-4160-9764-feeecbf3f579">Yes</dei:EntityCurrentReportingStatus>
    <dei:EntityInteractiveDataCurrent
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-c4af9df2-a02d-433f-8774-1430e54b45ff">Yes</dei:EntityInteractiveDataCurrent>
    <dei:EntityVoluntaryFilers
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-5a64b198-4253-4f03-8743-78f5e33d7109">No</dei:EntityVoluntaryFilers>
    <dei:EntityWellKnownSeasonedIssuer
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-8f05122b-b8a7-49f0-a5d1-10dd12109183">No</dei:EntityWellKnownSeasonedIssuer>
    <dei:DocumentType
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-5fc89209-3318-4e2d-8a05-2aa01dd28fd5">10-K/A</dei:DocumentType>
    <dei:DocumentAnnualReport
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-32007021-008e-4450-8f96-69e85f85dfe1">true</dei:DocumentAnnualReport>
    <dei:CurrentFiscalYearEndDate
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-c5798f0a-24d5-4fa7-8884-5695797b6a37">--12-31</dei:CurrentFiscalYearEndDate>
    <dei:DocumentPeriodEndDate
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-05bec41e-7b5c-4044-bffc-67a952bb6408">2025-12-31</dei:DocumentPeriodEndDate>
    <dei:DocumentTransitionReport
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-229f3b0d-7431-4eef-9cd5-260a64ab3e00">false</dei:DocumentTransitionReport>
    <dei:EntityFileNumber
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-0be4b025-22f9-4be1-a322-7035ae4eea37">1-8625</dei:EntityFileNumber>
    <dei:EntityRegistrantName
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-d7d39b24-62a5-4d6c-adfe-22a2612a0492">Reading International, Inc.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-e194479c-5a0b-4e98-9f2c-0f0442152e8f">NV</dei:EntityIncorporationStateCountryCode>
    <dei:EntityTaxIdentificationNumber
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-02cadfb6-1ad0-4ba3-84cc-034a4020348e">95-3885184</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-de443534-d5c2-4dbc-a50d-bd5d69a21920">189 Second Avenue</dei:EntityAddressAddressLine1>
    <dei:EntityAddressAddressLine2
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-09098549-b7ed-4d4c-ac19-61b8b41300b6">Suite 2S</dei:EntityAddressAddressLine2>
    <dei:EntityAddressCityOrTown
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-22675380-b87c-43ee-9331-aef32359b49e">New York</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-4a863def-61ee-48b3-af97-73426267c1ac">NY</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-0da4a090-4105-4875-ac9a-ebccd4e4a76f">10003</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-04cd1a16-c413-4276-9640-7eb6b2d27e15">213</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-a8bd6e58-7d5e-4a2f-9b1d-f97ce0b6f8e1">235-2240</dei:LocalPhoneNumber>
    <dei:Security12bTitle
      contextRef="Duration_1_1_2025_To_12_31_2025_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassAMember"
      id="ct-nonNumeric-47f384fc-7eaf-4db8-bc4f-86d90dae4725">Class A Non-Voting Common Stock, $0.01 Par Value</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="Duration_1_1_2025_To_12_31_2025_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassAMember"
      id="ct-nonNumeric-99ba7653-042d-4675-9feb-d001967905af">RDI</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="Duration_1_1_2025_To_12_31_2025_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassAMember"
      id="ct-nonNumeric-efd80467-cc23-4085-a29d-e7518c4f0c8c">NASDAQ</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="Duration_1_1_2025_To_12_31_2025_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassBMember"
      id="ct-nonNumeric-55660fca-58c0-49f5-89f6-c04c8072ac0d">Class B Voting Common Stock, $0.01 Par Value</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="Duration_1_1_2025_To_12_31_2025_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassBMember"
      id="ct-nonNumeric-9aff5be4-46da-43a0-9921-56258b943216">RDIB</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="Duration_1_1_2025_To_12_31_2025_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassBMember"
      id="ct-nonNumeric-6ec21124-1add-404a-85a5-d04353189b54">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityFilerCategory
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-e2a1186f-98d0-4e06-9064-10b5ca084be1">Non-accelerated Filer</dei:EntityFilerCategory>
    <dei:EntitySmallBusiness
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-77b64380-fe9c-4ef8-8a10-d829434f5b21">true</dei:EntitySmallBusiness>
    <dei:EntityEmergingGrowthCompany
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-4538ef5c-44e5-4ce7-9a9c-fbc87aa1e8c3">false</dei:EntityEmergingGrowthCompany>
    <dei:IcfrAuditorAttestationFlag
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-cc4902eb-7300-4c7f-83b5-73eccc67948d">false</dei:IcfrAuditorAttestationFlag>
    <dei:DocumentFinStmtErrorCorrectionFlag
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-8a57d1da-df6f-49ad-b643-d46227c5aa9f">false</dei:DocumentFinStmtErrorCorrectionFlag>
    <dei:EntityShellCompany
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-11004e9d-89e9-4102-8405-2a3bdc5a949e">false</dei:EntityShellCompany>
    <dei:EntityPublicFloat
      contextRef="As_Of_6_30_2025"
      decimals="0"
      id="ct-nonFraction-ec3a738f-97f0-4cfd-b91d-f346b491477f"
      unitRef="Unit12">26804265</dei:EntityPublicFloat>
    <dei:EntityCommonStockSharesOutstanding
      contextRef="As_Of_3_30_2026_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassAMember"
      decimals="INF"
      id="ct-nonFraction-1d6963b9-fc34-4ee2-a5a9-f07fddbeddbf"
      unitRef="Unit1">21036670</dei:EntityCommonStockSharesOutstanding>
    <dei:EntityCommonStockSharesOutstanding
      contextRef="As_Of_3_30_2026_us-gaap_StatementClassOfStockAxis_us-gaap_CommonClassBMember"
      decimals="INF"
      id="ct-nonFraction-956442b9-a59e-4f85-81b7-bc901039dd35"
      unitRef="Unit1">1680590</dei:EntityCommonStockSharesOutstanding>
    <dei:DocumentsIncorporatedByReferenceTextBlock
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-818a20ec-7cc7-4897-b424-121320a3833b">&lt;span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;"&gt;Documents Incorporated by Reference &lt;/span&gt;&lt;p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"&gt;&lt;span style="white-space:pre-wrap; color: #000000;font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"&gt; &lt;/span&gt;&lt;/p&gt;&lt;p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"&gt;&lt;span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"&gt;None.&lt;/span&gt;&lt;/p&gt;</dei:DocumentsIncorporatedByReferenceTextBlock>
    <dei:AmendmentDescription
      contextRef="Duration_1_1_2025_To_12_31_2025"
      id="ct-nonNumeric-57ed8ea5-910b-416b-b01d-daea2385b2ea">EXPLANATORY NOTE  This Amendment No. 2 on Form 10-K/A (this "Form 10-K/A") amends our Annual Report on Form 10-K for the fiscal year ended December 31, 2025, originally filed with the U.S. Securities and Exchange Commission (the "SEC") on March 31, 2026, as amended by Amendment No. 1 on Form 10-K/A filed with the SEC on April 20, 2026 (as amended, (the "2025 Form 10-K").  We are filing this Form 10-K/A to amend and restate the Exhibit Index (including the filing of new certifications as required by Section 302 of the Sarbanes-Oxley Act of 2002, as amended, in accordance with Rule 13a-14(a) under the Securities Exchange Act of 1934, as amended) in Item 15 of Part IV of the 2025 Form 10-K to include new Exhibits 10.20 and 10.25, and to include the information required by Items 10 through 14 of Part III that were not included in the 2025 Form 10-K, as we will not file a definitive proxy statement containing such information within 120 days after the end of the fiscal year ended December 31, 2025.  Our board of directors has not yet set a date for the Company's 2026 Annual Meeting of Stockholders (the "Annual Meeting"). This Form 10-K/A amends and restates in their entirety Items 10 through 14 of Part III and the Exhibit Index (including the filing of new certifications as required by Section 302 of the Sarbanes-Oxley Act of 2002, as amended (the "Sarbanes-Oxley Act") in accordance with Rule 13a-14(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act") of the 2025 Form 10-K. Except as otherwise expressly noted above, this Form 10-K/A does not amend any other information set forth in the 2025 Form 10-K. This Form 10-K/A continues to speak as of the date of the 2025 Form 10-K and, except where expressly noted, we have not updated disclosures contained herein or therein to reflect any events that occurred at a date subsequent to the date of the 2025 Form 10-K. Accordingly, this Form 10-K/A should be read in conjunction with the 2025 Form 10-K and our other filings with the SEC. Because no financial statements have been included in this Form 10-K/A and this Form 10-K/A does not contain or amend any disclosure with respect to Item 307 or Item 308 of Regulation S-K, paragraphs 3, 4 and 5 of the certifications required by Section 302 of the Sarbanes-Oxley Act have been omitted. Unless the context requires otherwise, all references to the "Company," "Reading," &#x201c;we,&#x201d; &#x201c;our&#x201d; or &#x201c;us&#x201d; means Reading International, Inc., a Nevada corporation, and its consolidated subsidiaries.</dei:AmendmentDescription>
</xbrl>
