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Property And Equipment (Loss On Sale Of Property) (Details) - Los Angeles [Member] $ in Thousands | Sep. 30, 2024 USD ($)
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Real Estate Properties [Line Items] |
Sales price | $ 10,000
Net book value | (10,800)
Loss on sale, gross of direct costs | (800)
Direct sale costs incurred | (325)
Loss on sale, net of direct costs | $ (1,125)

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- Definition Disposal Group, Including Discontinued Operation, Direct Costs Incurred + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Disposal Group, Including Discontinued Operation, Gain (Loss) On Sale, Gross + References No definition available. + Details
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Namespace Prefix: | rdi_
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- Definition Disposal Group, Including Discontinued Operation, Gain (Loss) On Sale, Net + References No definition available. + Details
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Namespace Prefix: | rdi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Real Estate Property Sale Price + References No definition available. + Details
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Namespace Prefix: | rdi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |