3.26.1 html 467 596 1 false 133 0 false 9 false false R1.htm 00090 - Document - Document And Entity Information Sheet http://www.readingrdi.com/role/DocumentDocumentAndEntityInformation Document And Entity Information Cover 1 false false R2.htm 00100 - Statement - Consolidated Balance Sheets Sheet http://www.readingrdi.com/role/StatementConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 00105 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://www.readingrdi.com/role/StatementConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 00200 - Statement - Consolidated Statements Of Operations Sheet http://www.readingrdi.com/role/StatementConsolidatedStatementsOfOperations Consolidated Statements Of Operations Statements 4 false false R5.htm 00300 - Statement - Consolidated Statements Of Comprehensive Income (Loss) Sheet http://www.readingrdi.com/role/StatementConsolidatedStatementsOfComprehensiveIncomeLoss Consolidated Statements Of Comprehensive Income (Loss) Statements 5 false false R6.htm 00400 - Statement - Consolidated Statements Of Stockholders' Equity Sheet http://www.readingrdi.com/role/StatementConsolidatedStatementsOfStockholdersEquity Consolidated Statements Of Stockholders' Equity Statements 6 false false R7.htm 00500 - Statement - Consolidated Statements Of Cash Flows Sheet http://www.readingrdi.com/role/StatementConsolidatedStatementsOfCashFlows Consolidated Statements Of Cash Flows Statements 7 false false R8.htm 10101 - Disclosure - Description Of Business Sheet http://www.readingrdi.com/role/DisclosureDescriptionOfBusiness Description Of Business Notes 8 false false R9.htm 10201 - Disclosure - Liquidity Sheet http://www.readingrdi.com/role/DisclosureLiquidity Liquidity Notes 9 false false R10.htm 10301 - Disclosure - Summary Of Significant Accounting Policies Sheet http://www.readingrdi.com/role/DisclosureSummaryOfSignificantAccountingPolicies Summary Of Significant Accounting Policies Notes 10 false false R11.htm 10401 - Disclosure - Segment Reporting Sheet http://www.readingrdi.com/role/DisclosureSegmentReporting Segment Reporting Notes 11 false false R12.htm 10501 - Disclosure - Earnings (Loss) Per Share Sheet http://www.readingrdi.com/role/DisclosureEarningsLossPerShare Earnings (Loss) Per Share Notes 12 false false R13.htm 10601 - Disclosure - Real Estate Transactions Sheet http://www.readingrdi.com/role/DisclosureRealEstateTransactions Real Estate Transactions Notes 13 false false R14.htm 10701 - Disclosure - Properties And Equipment Sheet http://www.readingrdi.com/role/DisclosurePropertiesAndEquipment Properties And Equipment Notes 14 false false R15.htm 10801 - Disclosure - Leases Sheet http://www.readingrdi.com/role/DisclosureLeases Leases Notes 15 false false R16.htm 10901 - Disclosure - Investments In Unconsolidated Joint Ventures Sheet http://www.readingrdi.com/role/DisclosureInvestmentsInUnconsolidatedJointVentures Investments In Unconsolidated Joint Ventures Notes 16 false false R17.htm 11001 - Disclosure - Goodwill And Intangible Assets Sheet http://www.readingrdi.com/role/DisclosureGoodwillAndIntangibleAssets Goodwill And Intangible Assets Notes 17 false false R18.htm 11101 - Disclosure - Prepaid And Other Assets Sheet http://www.readingrdi.com/role/DisclosurePrepaidAndOtherAssets Prepaid And Other Assets Notes 18 false false R19.htm 11201 - Disclosure - Income Taxes Sheet http://www.readingrdi.com/role/DisclosureIncomeTaxes Income Taxes Notes 19 false false R20.htm 11301 - Disclosure - Borrowings Sheet http://www.readingrdi.com/role/DisclosureBorrowings Borrowings Notes 20 false false R21.htm 11401 - Disclosure - Pension And Other Liabilities Sheet http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilities Pension And Other Liabilities Notes 21 false false R22.htm 11501 - Disclosure - Commitments And Contingencies Sheet http://www.readingrdi.com/role/DisclosureCommitmentsAndContingencies Commitments And Contingencies Notes 22 false false R23.htm 11601 - Disclosure - Non-controlling Interests Sheet http://www.readingrdi.com/role/DisclosureNonControllingInterests Non-controlling Interests Notes 23 false false R24.htm 11701 - Disclosure - Share-Based Compensation and Share Repurchase Plans Sheet http://www.readingrdi.com/role/DisclosureShareBasedCompensationAndShareRepurchasePlans Share-Based Compensation and Share Repurchase Plans Notes 24 false false R25.htm 11801 - Disclosure - Accumulated Other Comprehensive Income Sheet http://www.readingrdi.com/role/DisclosureAccumulatedOtherComprehensiveIncome Accumulated Other Comprehensive Income Notes 25 false false R26.htm 11901 - Disclosure - Fair Value Measurements Sheet http://www.readingrdi.com/role/DisclosureFairValueMeasurements Fair Value Measurements Notes 26 false false R27.htm 12001 - Disclosure - Hedge Accounting Sheet http://www.readingrdi.com/role/DisclosureHedgeAccounting Hedge Accounting Notes 27 false false R28.htm 12101 - Disclosure - Related Parties Sheet http://www.readingrdi.com/role/DisclosureRelatedParties Related Parties Notes 28 false false R29.htm 12201 - Disclosure - Subsequent Events Sheet http://www.readingrdi.com/role/DisclosureSubsequentEvents Subsequent Events Notes 29 false false R30.htm 12301 - Disclosure - Schedule II - Valuation And Qualifying Accounts Sheet http://www.readingrdi.com/role/DisclosureScheduleIiValuationAndQualifyingAccounts Schedule II - Valuation And Qualifying Accounts Notes 30 false false R31.htm 20302 - Disclosure - Summary Of Significant Accounting Policies (Policy) Sheet http://www.readingrdi.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicy Summary Of Significant Accounting Policies (Policy) Policies http://www.readingrdi.com/role/DisclosureSummaryOfSignificantAccountingPolicies 31 false false R32.htm 30303 - Disclosure - Summary Of Significant Accounting Policies (Tables) Sheet http://www.readingrdi.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables Summary Of Significant Accounting Policies (Tables) Tables http://www.readingrdi.com/role/DisclosureSummaryOfSignificantAccountingPolicies 32 false false R33.htm 30403 - Disclosure - Segment Reporting (Tables) Sheet http://www.readingrdi.com/role/DisclosureSegmentReportingTables Segment Reporting (Tables) Tables http://www.readingrdi.com/role/DisclosureSegmentReporting 33 false false R34.htm 30503 - Disclosure - Earnings (Loss) Per Share (Tables) Sheet http://www.readingrdi.com/role/DisclosureEarningsLossPerShareTables Earnings (Loss) Per Share (Tables) Tables http://www.readingrdi.com/role/DisclosureEarningsLossPerShare 34 false false R35.htm 30603 - Disclosure - Real Estate Transactions (Tables) Sheet http://www.readingrdi.com/role/DisclosureRealEstateTransactionsTables Real Estate Transactions (Tables) Tables http://www.readingrdi.com/role/DisclosureRealEstateTransactions 35 false false R36.htm 30703 - Disclosure - Properties And Equipment (Tables) Sheet http://www.readingrdi.com/role/DisclosurePropertiesAndEquipmentTables Properties And Equipment (Tables) Tables http://www.readingrdi.com/role/DisclosurePropertiesAndEquipment 36 false false R37.htm 30803 - Disclosure - Leases (Tables) Sheet http://www.readingrdi.com/role/DisclosureLeasesTables Leases (Tables) Tables http://www.readingrdi.com/role/DisclosureLeases 37 false false R38.htm 30903 - Disclosure - Investments In Unconsolidated Joint Ventures (Tables) Sheet http://www.readingrdi.com/role/DisclosureInvestmentsInUnconsolidatedJointVenturesTables Investments In Unconsolidated Joint Ventures (Tables) Tables http://www.readingrdi.com/role/DisclosureInvestmentsInUnconsolidatedJointVentures 38 false false R39.htm 31003 - Disclosure - Goodwill And Intangible Assets (Tables) Sheet http://www.readingrdi.com/role/DisclosureGoodwillAndIntangibleAssetsTables Goodwill And Intangible Assets (Tables) Tables http://www.readingrdi.com/role/DisclosureGoodwillAndIntangibleAssets 39 false false R40.htm 31103 - Disclosure - Prepaid And Other Assets (Tables) Sheet http://www.readingrdi.com/role/DisclosurePrepaidAndOtherAssetsTables Prepaid And Other Assets (Tables) Tables http://www.readingrdi.com/role/DisclosurePrepaidAndOtherAssets 40 false false R41.htm 31203 - Disclosure - Income Taxes (Tables) Sheet http://www.readingrdi.com/role/DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://www.readingrdi.com/role/DisclosureIncomeTaxes 41 false false R42.htm 31303 - Disclosure - Borrowings (Tables) Sheet http://www.readingrdi.com/role/DisclosureBorrowingsTables Borrowings (Tables) Tables http://www.readingrdi.com/role/DisclosureBorrowings 42 false false R43.htm 31403 - Disclosure - Pension And Other Liabilities (Tables) Sheet http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesTables Pension And Other Liabilities (Tables) Tables http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilities 43 false false R44.htm 31603 - Disclosure - Non-controlling Interests (Tables) Sheet http://www.readingrdi.com/role/DisclosureNonControllingInterestsTables Non-controlling Interests (Tables) Tables http://www.readingrdi.com/role/DisclosureNonControllingInterests 44 false false R45.htm 31703 - Disclosure - Share-Based Compensation and Stock Repurchase Plans (Tables) Sheet http://www.readingrdi.com/role/DisclosureShareBasedCompensationAndStockRepurchasePlansTables Share-Based Compensation and Stock Repurchase Plans (Tables) Tables 45 false false R46.htm 31803 - Disclosure - Accumulated Other Comprehensive Income (Tables) Sheet http://www.readingrdi.com/role/DisclosureAccumulatedOtherComprehensiveIncomeTables Accumulated Other Comprehensive Income (Tables) Tables http://www.readingrdi.com/role/DisclosureAccumulatedOtherComprehensiveIncome 46 false false R47.htm 31903 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.readingrdi.com/role/DisclosureFairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.readingrdi.com/role/DisclosureFairValueMeasurements 47 false false R48.htm 32003 - Disclosure - Hedge Accounting (Tables) Sheet http://www.readingrdi.com/role/DisclosureHedgeAccountingTables Hedge Accounting (Tables) Tables http://www.readingrdi.com/role/DisclosureHedgeAccounting 48 false false R49.htm 32103 - Disclosure - Related Parties (Tables) Sheet http://www.readingrdi.com/role/DisclosureRelatedPartiesTables Related Parties (Tables) Tables http://www.readingrdi.com/role/DisclosureRelatedParties 49 false false R50.htm 40201 - Disclosure - Liquidity (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureLiquidityNarrativeDetails Liquidity (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureLiquidity 50 false false R51.htm 40301 - Disclosure - Summary Of Significant Accounting Policies (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureSummaryOfSignificantAccountingPoliciesNarrativeDetails Summary Of Significant Accounting Policies (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables 51 false false R52.htm 40302 - Disclosure - Summary Of Significant Accounting Policies (Schedule Of Estimated Useful Lives Of Assets) (Details) Sheet http://www.readingrdi.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfEstimatedUsefulLivesOfAssetsDetails Summary Of Significant Accounting Policies (Schedule Of Estimated Useful Lives Of Assets) (Details) Details http://www.readingrdi.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables 52 false false R53.htm 40303 - Disclosure - Summary Of Significant Accounting Policies (Summary Of Currency Exchange Rates) (Details) Sheet http://www.readingrdi.com/role/DisclosureSummaryOfSignificantAccountingPoliciesSummaryOfCurrencyExchangeRatesDetails Summary Of Significant Accounting Policies (Summary Of Currency Exchange Rates) (Details) Details http://www.readingrdi.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables 53 false false R54.htm 40401 - Disclosure - Segment Reporting (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureSegmentReportingNarrativeDetails Segment Reporting (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureSegmentReportingTables 54 false false R55.htm 40402 - Disclosure - Segment Reporting (Summary Of Results Of Operations For Principal Business Segment) (Details) Sheet http://www.readingrdi.com/role/DisclosureSegmentReportingSummaryOfResultsOfOperationsForPrincipalBusinessSegmentDetails Segment Reporting (Summary Of Results Of Operations For Principal Business Segment) (Details) Details http://www.readingrdi.com/role/DisclosureSegmentReportingTables 55 false false R56.htm 40403 - Disclosure - Segment Reporting (Summary Of Cinema Exhibition Segment Revenue To Segment Operating Income) (Details) Sheet http://www.readingrdi.com/role/DisclosureSegmentReportingSummaryOfCinemaExhibitionSegmentRevenueToSegmentOperatingIncomeDetails Segment Reporting (Summary Of Cinema Exhibition Segment Revenue To Segment Operating Income) (Details) Details http://www.readingrdi.com/role/DisclosureSegmentReportingTables 56 false false R57.htm 40404 - Disclosure - Segment Reporting (Summary Of Real Estate Segment Revenue To Segment Operating Income) (Details) Sheet http://www.readingrdi.com/role/DisclosureSegmentReportingSummaryOfRealEstateSegmentRevenueToSegmentOperatingIncomeDetails Segment Reporting (Summary Of Real Estate Segment Revenue To Segment Operating Income) (Details) Details http://www.readingrdi.com/role/DisclosureSegmentReportingTables 57 false false R58.htm 40405 - Disclosure - Segment Reporting (Reconciliation To Net Income Attributable To Common Shareholders) (Details) Sheet http://www.readingrdi.com/role/DisclosureSegmentReportingReconciliationToNetIncomeAttributableToCommonShareholdersDetails Segment Reporting (Reconciliation To Net Income Attributable To Common Shareholders) (Details) Details http://www.readingrdi.com/role/DisclosureSegmentReportingTables 58 false false R59.htm 40406 - Disclosure - Segment Reporting (Summary Of Assets) (Details) Sheet http://www.readingrdi.com/role/DisclosureSegmentReportingSummaryOfAssetsDetails Segment Reporting (Summary Of Assets) (Details) Details http://www.readingrdi.com/role/DisclosureSegmentReportingTables 59 false false R60.htm 40407 - Disclosure - Segment Reporting (Schedule Of Operating Properties Net By Country) (Details) Sheet http://www.readingrdi.com/role/DisclosureSegmentReportingScheduleOfOperatingPropertiesNetByCountryDetails Segment Reporting (Schedule Of Operating Properties Net By Country) (Details) Details http://www.readingrdi.com/role/DisclosureSegmentReportingTables 60 false false R61.htm 40408 - Disclosure - Segment Reporting (Summary Of Capital Expenditures) (Details) Sheet http://www.readingrdi.com/role/DisclosureSegmentReportingSummaryOfCapitalExpendituresDetails Segment Reporting (Summary Of Capital Expenditures) (Details) Details http://www.readingrdi.com/role/DisclosureSegmentReportingTables 61 false false R62.htm 40501 - Disclosure - Earnings (Loss) Per Share (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureEarningsLossPerShareNarrativeDetails Earnings (Loss) Per Share (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureEarningsLossPerShareTables 62 false false R63.htm 40502 - Disclosure - Earnings (Loss) Per Share (Computation Of Basic And Diluted Earnings (Loss) Per Share) (Details) Sheet http://www.readingrdi.com/role/DisclosureEarningsLossPerShareComputationOfBasicAndDilutedEarningsLossPerShareDetails Earnings (Loss) Per Share (Computation Of Basic And Diluted Earnings (Loss) Per Share) (Details) Details http://www.readingrdi.com/role/DisclosureEarningsLossPerShareTables 63 false false R64.htm 40601 - Disclosure - Real Estate Transactions (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureRealEstateTransactionsNarrativeDetails Real Estate Transactions (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureRealEstateTransactionsTables 64 false false R65.htm 40602 - Disclosure - Real Estate Transactions (Schedule Of The Total Transaction Gain Loss) (Details) Sheet http://www.readingrdi.com/role/DisclosureRealEstateTransactionsScheduleOfTotalTransactionGainLossDetails Real Estate Transactions (Schedule Of The Total Transaction Gain Loss) (Details) Details http://www.readingrdi.com/role/DisclosureRealEstateTransactionsTables 65 false false R66.htm 40701 - Disclosure - Properties And Equipment (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosurePropertiesAndEquipmentNarrativeDetails Properties And Equipment (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosurePropertiesAndEquipmentTables 66 false false R67.htm 40702 - Disclosure - Properties And Equipment (Schedule Of Property And Equipment) (Details) Sheet http://www.readingrdi.com/role/DisclosurePropertiesAndEquipmentScheduleOfPropertyAndEquipmentDetails Properties And Equipment (Schedule Of Property And Equipment) (Details) Details http://www.readingrdi.com/role/DisclosurePropertiesAndEquipmentTables 67 false false R68.htm 40703 - Disclosure - Properties And Equipment (Schedule Of The Gross And Carrying Amounts Of The Properties Leased Of Held-For-Leasing) (Details) Sheet http://www.readingrdi.com/role/DisclosurePropertiesAndEquipmentScheduleOfGrossAndCarryingAmountsOfPropertiesLeasedOfHeldForLeasingDetails Properties And Equipment (Schedule Of The Gross And Carrying Amounts Of The Properties Leased Of Held-For-Leasing) (Details) Details http://www.readingrdi.com/role/DisclosurePropertiesAndEquipmentTables 68 false false R69.htm 40802 - Disclosure - Leases (Components Of Lease Expense) (Details) Sheet http://www.readingrdi.com/role/DisclosureLeasesComponentsOfLeaseExpenseDetails Leases (Components Of Lease Expense) (Details) Details http://www.readingrdi.com/role/DisclosureLeasesTables 69 false false R70.htm 40803 - Disclosure - Leases (Supplemental Cash Flow Information Related To Leases) (Details) Sheet http://www.readingrdi.com/role/DisclosureLeasesSupplementalCashFlowInformationRelatedToLeasesDetails Leases (Supplemental Cash Flow Information Related To Leases) (Details) Details http://www.readingrdi.com/role/DisclosureLeasesTables 70 false false R71.htm 40804 - Disclosure - Leases (Supplemental Balance Sheet Information Related To Leases) (Details) Sheet http://www.readingrdi.com/role/DisclosureLeasesSupplementalBalanceSheetInformationRelatedToLeasesDetails Leases (Supplemental Balance Sheet Information Related To Leases) (Details) Details http://www.readingrdi.com/role/DisclosureLeasesTables 71 false false R72.htm 40805 - Disclosure - Leases (Maturity Of Leases As Lessee) (Details) Sheet http://www.readingrdi.com/role/DisclosureLeasesMaturityOfLeasesAsLesseeDetails Leases (Maturity Of Leases As Lessee) (Details) Details http://www.readingrdi.com/role/DisclosureLeasesTables 72 false false R73.htm 40806 - Disclosure - Leases (Components Of Lease Income) (Details) Sheet http://www.readingrdi.com/role/DisclosureLeasesComponentsOfLeaseIncomeDetails Leases (Components Of Lease Income) (Details) Details http://www.readingrdi.com/role/DisclosureLeasesTables 73 false false R74.htm 40807 - Disclosure - Leases (Book Value Of Assets Under Operating Leases From Owned Assets) (Details) Sheet http://www.readingrdi.com/role/DisclosureLeasesBookValueOfAssetsUnderOperatingLeasesFromOwnedAssetsDetails Leases (Book Value Of Assets Under Operating Leases From Owned Assets) (Details) Details http://www.readingrdi.com/role/DisclosureLeasesTables 74 false false R75.htm 40808 - Disclosure - Leases (Maturity Of Leases As Lessor) (Details) Sheet http://www.readingrdi.com/role/DisclosureLeasesMaturityOfLeasesAsLessorDetails Leases (Maturity Of Leases As Lessor) (Details) Details http://www.readingrdi.com/role/DisclosureLeasesTables 75 false false R76.htm 40901 - Disclosure - Investments In Unconsolidated Joint Ventures (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureInvestmentsInUnconsolidatedJointVenturesNarrativeDetails Investments In Unconsolidated Joint Ventures (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureInvestmentsInUnconsolidatedJointVenturesTables 76 false false R77.htm 40902 - Disclosure - Investments In Unconsolidated Joint Ventures (Summary Of The Investments In Unconsolidated Joint Ventures And Entities) (Details) Sheet http://www.readingrdi.com/role/DisclosureInvestmentsInUnconsolidatedJointVenturesSummaryOfInvestmentsInUnconsolidatedJointVenturesAndEntitiesDetails Investments In Unconsolidated Joint Ventures (Summary Of The Investments In Unconsolidated Joint Ventures And Entities) (Details) Details http://www.readingrdi.com/role/DisclosureInvestmentsInUnconsolidatedJointVenturesTables 77 false false R78.htm 40903 - Disclosure - Investments In Unconsolidated Joint Ventures (Summary Of Equity Earnings (Losses) From Investments In Unconsolidated Joint Ventures) (Details) Sheet http://www.readingrdi.com/role/DisclosureInvestmentsInUnconsolidatedJointVenturesSummaryOfEquityEarningsLossesFromInvestmentsInUnconsolidatedJointVenturesDetails Investments In Unconsolidated Joint Ventures (Summary Of Equity Earnings (Losses) From Investments In Unconsolidated Joint Ventures) (Details) Details http://www.readingrdi.com/role/DisclosureInvestmentsInUnconsolidatedJointVenturesTables 78 false false R79.htm 41001 - Disclosure - Goodwill And Intangible Assets (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureGoodwillAndIntangibleAssetsNarrativeDetails Goodwill And Intangible Assets (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureGoodwillAndIntangibleAssetsTables 79 false false R80.htm 41002 - Disclosure - Goodwill And Intangible Assets (Summary Of Goodwill) (Details) Sheet http://www.readingrdi.com/role/DisclosureGoodwillAndIntangibleAssetsSummaryOfGoodwillDetails Goodwill And Intangible Assets (Summary Of Goodwill) (Details) Details http://www.readingrdi.com/role/DisclosureGoodwillAndIntangibleAssetsTables 80 false false R81.htm 41003 - Disclosure - Goodwill And Intangible Assets (Summary Of Intangible Assets Other Than Goodwill) (Details) Sheet http://www.readingrdi.com/role/DisclosureGoodwillAndIntangibleAssetsSummaryOfIntangibleAssetsOtherThanGoodwillDetails Goodwill And Intangible Assets (Summary Of Intangible Assets Other Than Goodwill) (Details) Details http://www.readingrdi.com/role/DisclosureGoodwillAndIntangibleAssetsTables 81 false false R82.htm 41004 - Disclosure - Goodwill And Intangible Assets (Schedule Of Estimated Amortization Expense) (Details) Sheet http://www.readingrdi.com/role/DisclosureGoodwillAndIntangibleAssetsScheduleOfEstimatedAmortizationExpenseDetails Goodwill And Intangible Assets (Schedule Of Estimated Amortization Expense) (Details) Details http://www.readingrdi.com/role/DisclosureGoodwillAndIntangibleAssetsTables 82 false false R83.htm 41101 - Disclosure - Prepaid And Other Assets (Details) Sheet http://www.readingrdi.com/role/DisclosurePrepaidAndOtherAssetsDetails Prepaid And Other Assets (Details) Details http://www.readingrdi.com/role/DisclosurePrepaidAndOtherAssetsTables 83 false false R84.htm 41201 - Disclosure - Income Taxes (Details) Sheet http://www.readingrdi.com/role/DisclosureIncomeTaxesDetails Income Taxes (Details) Details http://www.readingrdi.com/role/DisclosureIncomeTaxesTables 84 false false R85.htm 41202 - Disclosure - Income Taxes (Schedule Of Income (Loss) Before Income Tax Expense) (Details) Sheet http://www.readingrdi.com/role/DisclosureIncomeTaxesScheduleOfIncomeLossBeforeIncomeTaxExpenseDetails Income Taxes (Schedule Of Income (Loss) Before Income Tax Expense) (Details) Details http://www.readingrdi.com/role/DisclosureIncomeTaxesTables 85 false false R86.htm 41203 - Disclosure - Income Taxes (Schedule Of Significant Components Of The Provision For Income Taxes) (Details) Sheet http://www.readingrdi.com/role/DisclosureIncomeTaxesScheduleOfSignificantComponentsOfProvisionForIncomeTaxesDetails Income Taxes (Schedule Of Significant Components Of The Provision For Income Taxes) (Details) Details http://www.readingrdi.com/role/DisclosureIncomeTaxesTables 86 false false R87.htm 41204 - Disclosure - Income Taxes (Schedule Of Components Of Deferred Tax Assets And Liabilities) (Details) Sheet http://www.readingrdi.com/role/DisclosureIncomeTaxesScheduleOfComponentsOfDeferredTaxAssetsAndLiabilitiesDetails Income Taxes (Schedule Of Components Of Deferred Tax Assets And Liabilities) (Details) Details http://www.readingrdi.com/role/DisclosureIncomeTaxesTables 87 false false R88.htm 41205 - Disclosure - Income Taxes (Schedule Of Income Tax Reconciliation Items) (Details) Sheet http://www.readingrdi.com/role/DisclosureIncomeTaxesScheduleOfIncomeTaxReconciliationItemsDetails Income Taxes (Schedule Of Income Tax Reconciliation Items) (Details) Details http://www.readingrdi.com/role/DisclosureIncomeTaxesTables 88 false false R89.htm 41206 - Disclosure - Income Taxes (Summary Of The Activity Related To Unrecognized Tax Benefits) (Details) Sheet http://www.readingrdi.com/role/DisclosureIncomeTaxesSummaryOfActivityRelatedToUnrecognizedTaxBenefitsDetails Income Taxes (Summary Of The Activity Related To Unrecognized Tax Benefits) (Details) Details http://www.readingrdi.com/role/DisclosureIncomeTaxesTables 89 false false R90.htm 41207 - Disclosure - Income Taxes (Schedule Of Income Taxes Paid, Net Of Refunds Received) (Details) Sheet http://www.readingrdi.com/role/DisclosureIncomeTaxesScheduleOfIncomeTaxesPaidNetOfRefundsReceivedDetails Income Taxes (Schedule Of Income Taxes Paid, Net Of Refunds Received) (Details) Details http://www.readingrdi.com/role/DisclosureIncomeTaxesTables 90 false false R91.htm 41301 - Disclosure - Borrowings (Trust Preferred Securities) (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureBorrowingsTrustPreferredSecuritiesNarrativeDetails Borrowings (Trust Preferred Securities) (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureBorrowingsTables 91 false false R92.htm 41302 - Disclosure - Borrowings (Bank Of America Credit Facility) (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureBorrowingsBankOfAmericaCreditFacilityNarrativeDetails Borrowings (Bank Of America Credit Facility) (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureBorrowingsTables 92 false false R93.htm 41303 - Disclosure - Borrowings (Cinema 1, 2, 3 Term Loan) (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureBorrowingsCinema123TermLoanNarrativeDetails Borrowings (Cinema 1, 2, 3 Term Loan) (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureBorrowingsTables 93 false false R94.htm 41304 - Disclosure - Borrowings (Minetta And Orpheum Theatres Loan) (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureBorrowingsMinettaAndOrpheumTheatresLoanNarrativeDetails Borrowings (Minetta And Orpheum Theatres Loan) (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureBorrowingsTables 94 false false R95.htm 41305 - Disclosure - Borrowings (Union Square Financing) (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureBorrowingsUnionSquareFinancingNarrativeDetails Borrowings (Union Square Financing) (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureBorrowingsTables 95 false false R96.htm 41306 - Disclosure - Borrowings (Nationwide Theaters Corp) (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureBorrowingsNationwideTheatersCorpNarrativeDetails Borrowings (Nationwide Theaters Corp) (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureBorrowingsTables 96 false false R97.htm 41307 - Disclosure - Borrowings (Australian NAB Corporate Term Loan (AU)) (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureBorrowingsAustralianNabCorporateTermLoanAuNarrativeDetails Borrowings (Australian NAB Corporate Term Loan (AU)) (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureBorrowingsTables 97 false false R98.htm 41308 - Disclosure - Borrowings (Summary Of Borrowings) (Details) Sheet http://www.readingrdi.com/role/DisclosureBorrowingsSummaryOfBorrowingsDetails Borrowings (Summary Of Borrowings) (Details) Details http://www.readingrdi.com/role/DisclosureBorrowingsTables 98 false false R99.htm 41309 - Disclosure - Borrowings (Schedule Of Long-term Debt Instruments, Net Of The Deferred Financing Costs) (Details) Sheet http://www.readingrdi.com/role/DisclosureBorrowingsScheduleOfLongTermDebtInstrumentsNetOfDeferredFinancingCostsDetails Borrowings (Schedule Of Long-term Debt Instruments, Net Of The Deferred Financing Costs) (Details) Details http://www.readingrdi.com/role/DisclosureBorrowingsTables 99 false false R100.htm 41310 - Disclosure - Borrowings (Schedule Of Future Principal Loan Payments) (Details) Sheet http://www.readingrdi.com/role/DisclosureBorrowingsScheduleOfFuturePrincipalLoanPaymentsDetails Borrowings (Schedule Of Future Principal Loan Payments) (Details) Details http://www.readingrdi.com/role/DisclosureBorrowingsTables 100 false false R101.htm 41401 - Disclosure - Pension And Other Liabilities (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesNarrativeDetails Pension And Other Liabilities (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesTables 101 false false R102.htm 41402 - Disclosure - Pension And Other Liabilities (Summary Of Other Liabilities Including Pension) (Details) Sheet http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesSummaryOfOtherLiabilitiesIncludingPensionDetails Pension And Other Liabilities (Summary Of Other Liabilities Including Pension) (Details) Details http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesTables 102 false false R103.htm 41403 - Disclosure - Pension And Other Liabilities (Schedule Of Change In Pension Benefit Obligation And Funded Status) (Details) Sheet http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesScheduleOfChangeInPensionBenefitObligationAndFundedStatusDetails Pension And Other Liabilities (Schedule Of Change In Pension Benefit Obligation And Funded Status) (Details) Details http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesTables 103 false false R104.htm 41404 - Disclosure - Pension And Other Liabilities (Schedule Of Pension Benefit Obligation Recognized In Balance Sheets) (Details) Sheet http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesScheduleOfPensionBenefitObligationRecognizedInBalanceSheetsDetails Pension And Other Liabilities (Schedule Of Pension Benefit Obligation Recognized In Balance Sheets) (Details) Details http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesTables 104 false false R105.htm 41405 - Disclosure - Pension And Other Liabilities (Schedule Of The Components Of Net Periodic Benefit Cost And Other Amounts Recognized In Other Comprehensive Income) (Details) Sheet http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesScheduleOfComponentsOfNetPeriodicBenefitCostAndOtherAmountsRecognizedInOtherComprehensiveIncomeDetails Pension And Other Liabilities (Schedule Of The Components Of Net Periodic Benefit Cost And Other Amounts Recognized In Other Comprehensive Income) (Details) Details http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesTables 105 false false R106.htm 41406 - Disclosure - Pension And Other Liabilities (Schedule Of Items Not Recognized As A Component Of Net Periodic Pension Cost) (Details) Sheet http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesScheduleOfItemsNotRecognizedAsComponentOfNetPeriodicPensionCostDetails Pension And Other Liabilities (Schedule Of Items Not Recognized As A Component Of Net Periodic Pension Cost) (Details) Details http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesTables 106 false false R107.htm 41407 - Disclosure - Pension And Other Liabilities (Schedule Of Expected Benefit Payments) (Details) Sheet http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesScheduleOfExpectedBenefitPaymentsDetails Pension And Other Liabilities (Schedule Of Expected Benefit Payments) (Details) Details http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesTables 107 false false R108.htm 41408 - Disclosure - Pension And Other Liabilities (Schedule Of Reconciliation Of The Lease Make-Good Provision) (Details) Sheet http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesScheduleOfReconciliationOfLeaseMakeGoodProvisionDetails Pension And Other Liabilities (Schedule Of Reconciliation Of The Lease Make-Good Provision) (Details) Details http://www.readingrdi.com/role/DisclosurePensionAndOtherLiabilitiesTables 108 false false R109.htm 41501 - Disclosure - Commitments And Contingencies (Details) Sheet http://www.readingrdi.com/role/DisclosureCommitmentsAndContingenciesDetails Commitments And Contingencies (Details) Details http://www.readingrdi.com/role/DisclosureCommitmentsAndContingencies 109 false false R110.htm 41601 - Disclosure - Non-controlling Interests (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureNonControllingInterestsNarrativeDetails Non-controlling Interests (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureNonControllingInterestsTables 110 false false R111.htm 41602 - Disclosure - Non-controlling Interests (Components Of Non-controlling Interests) (Details) Sheet http://www.readingrdi.com/role/DisclosureNonControllingInterestsComponentsOfNonControllingInterestsDetails Non-controlling Interests (Components Of Non-controlling Interests) (Details) Details http://www.readingrdi.com/role/DisclosureNonControllingInterestsTables 111 false false R112.htm 41603 - Disclosure - Non-controlling Interests (Components Of Income Attributable To Non-controlling Interest) (Details) Sheet http://www.readingrdi.com/role/DisclosureNonControllingInterestsComponentsOfIncomeAttributableToNonControllingInterestDetails Non-controlling Interests (Components Of Income Attributable To Non-controlling Interest) (Details) Details http://www.readingrdi.com/role/DisclosureNonControllingInterestsTables 112 false false R113.htm 41701 - Disclosure - Share-Based Compensation and Share Repurchase Plans (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureShareBasedCompensationAndShareRepurchasePlansNarrativeDetails Share-Based Compensation and Share Repurchase Plans (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureShareBasedCompensationAndShareRepurchasePlans 113 false false R114.htm 41702 - Disclosure - Share-Based Compensation And Share Repurchase Plans (Schedule Of Fair Value Of Options, Weighted Average Assumptions) (Details) Sheet http://www.readingrdi.com/role/DisclosureShareBasedCompensationAndShareRepurchasePlansScheduleOfFairValueOfOptionsWeightedAverageAssumptionsDetails Share-Based Compensation And Share Repurchase Plans (Schedule Of Fair Value Of Options, Weighted Average Assumptions) (Details) Details 114 false false R115.htm 41703 - Disclosure - Share-Based Compensation And Share Repurchase Plans (Summary Of Stock Options Outstanding And Exercisable) (Details) Sheet http://www.readingrdi.com/role/DisclosureShareBasedCompensationAndShareRepurchasePlansSummaryOfStockOptionsOutstandingAndExercisableDetails Share-Based Compensation And Share Repurchase Plans (Summary Of Stock Options Outstanding And Exercisable) (Details) Details 115 false false R116.htm 41704 - Disclosure - Share-Based Compensation And Share Repurchase Plans (Summary Of Vested And Unvested Stock Options) (Details) Sheet http://www.readingrdi.com/role/DisclosureShareBasedCompensationAndShareRepurchasePlansSummaryOfVestedAndUnvestedStockOptionsDetails Share-Based Compensation And Share Repurchase Plans (Summary Of Vested And Unvested Stock Options) (Details) Details 116 false false R117.htm 41705 - Disclosure - Share-Based Compensation And Share Repurchase Plans (Schedule Of Restricted Stock Units Issued And Vested) (Details) Sheet http://www.readingrdi.com/role/DisclosureShareBasedCompensationAndShareRepurchasePlansScheduleOfRestrictedStockUnitsIssuedAndVestedDetails Share-Based Compensation And Share Repurchase Plans (Schedule Of Restricted Stock Units Issued And Vested) (Details) Details 117 false false R118.htm 41802 - Disclosure - Accumulated Other Comprehensive Income (Details) Sheet http://www.readingrdi.com/role/DisclosureAccumulatedOtherComprehensiveIncomeDetails Accumulated Other Comprehensive Income (Details) Details http://www.readingrdi.com/role/DisclosureAccumulatedOtherComprehensiveIncomeTables 118 false false R119.htm 41901 - Disclosure - Fair Value Measurements (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureFairValueMeasurementsNarrativeDetails Fair Value Measurements (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureFairValueMeasurementsTables 119 false false R120.htm 41902 - Disclosure - Fair Value Measurements (Schedule Of Fair Value Carried At Cost And Measured On A Nonrecurring Basis) (Details) Sheet http://www.readingrdi.com/role/DisclosureFairValueMeasurementsScheduleOfFairValueCarriedAtCostAndMeasuredOnNonrecurringBasisDetails Fair Value Measurements (Schedule Of Fair Value Carried At Cost And Measured On A Nonrecurring Basis) (Details) Details http://www.readingrdi.com/role/DisclosureFairValueMeasurementsTables 120 false false R121.htm 42001 - Disclosure - Hedge Accounting (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureHedgeAccountingNarrativeDetails Hedge Accounting (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureHedgeAccountingTables 121 false false R122.htm 42002 - Disclosure - Hedge Accounting (Schedule Of Derivative Instruments On The Balance Sheet At Fair Value) (Details) Sheet http://www.readingrdi.com/role/DisclosureHedgeAccountingScheduleOfDerivativeInstrumentsOnBalanceSheetAtFairValueDetails Hedge Accounting (Schedule Of Derivative Instruments On The Balance Sheet At Fair Value) (Details) Details http://www.readingrdi.com/role/DisclosureHedgeAccountingTables 122 false false R123.htm 42003 - Disclosure - Hedge Accounting (Schedule Of Changes in Fair value) (Details) Sheet http://www.readingrdi.com/role/DisclosureHedgeAccountingScheduleOfChangesInFairValueDetails Hedge Accounting (Schedule Of Changes in Fair value) (Details) Details http://www.readingrdi.com/role/DisclosureHedgeAccountingTables 123 false false R124.htm 42004 - Disclosure - Hedge Accounting (Summary Of Hedged Transactions That Affect Earnings) (Details) Sheet http://www.readingrdi.com/role/DisclosureHedgeAccountingSummaryOfHedgedTransactionsThatAffectEarningsDetails Hedge Accounting (Summary Of Hedged Transactions That Affect Earnings) (Details) Details http://www.readingrdi.com/role/DisclosureHedgeAccountingTables 124 false false R125.htm 42101 - Disclosure - Related Parties (Narrative) (Details) Sheet http://www.readingrdi.com/role/DisclosureRelatedPartiesNarrativeDetails Related Parties (Narrative) (Details) Details http://www.readingrdi.com/role/DisclosureRelatedPartiesTables 125 false false R126.htm 42102 - Disclosure - Related Parties (Schedule Of Asset Acquisition) (Details) Sheet http://www.readingrdi.com/role/DisclosureRelatedPartiesScheduleOfAssetAcquisitionDetails Related Parties (Schedule Of Asset Acquisition) (Details) Details http://www.readingrdi.com/role/DisclosureRelatedPartiesTables 126 false false R127.htm 42301 - Schedule - Valuation And Qualifying Accounts (Details) Sheet http://www.readingrdi.com/role/ScheduleValuationAndQualifyingAccountsDetails Valuation And Qualifying Accounts (Details) Details 127 false false R128.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://www.readingrdi.com/role/DisclosureInsiderTradingArrangements Insider Trading Arrangements Uncategorized 128 false false R129.htm 995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure Sheet http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure Cybersecurity Risk Management and Strategy Disclosure Cover 129 false false All Reports Book All Reports rdi-20251231.xsd rdi-20251231_cal.xml rdi-20251231_def.xml rdi-20251231_lab.xml rdi-20251231_pre.xml rdi-20251231x10k.htm rdi-20251231x10kg001.jpg rdi-20251231x10kg002.jpg rdi-20251231x10kg003.jpg rdi-20251231x10kg004.jpg rdi-20251231x10kg005.jpg rdi-20251231x10kg006.jpg rdi-20251231x10kg007.jpg rdi-20251231x10kg008.jpg rdi-20251231x10kg009.jpg rdi-20251231x10kg010.jpg rdi-20251231x10kg011.jpg rdi-20251231x10kg012.jpg rdi-20251231x10kg013.jpg rdi-20251231x10kg014.jpg rdi-20251231x10kg015.jpg rdi-20251231x10kg016.jpg http://fasb.org/srt/2025 http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/cyd/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/ecd/2025 true true