XML 106 R92.htm IDEA: XBRL DOCUMENT
v3.26.1

Non-controlling Interests (Components Of Non-controlling Interests) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 | Dec. 31, 2025
Noncontrolling Interest [Line Items] |  |
Net income (loss) attributable to non-controlling interests in consolidated subsidiaries | $ 158 | $ 141
Australian Country Cinemas, Pty Ltd [Member] |  |
Noncontrolling Interest [Line Items] |  |
Net income (loss) attributable to non-controlling interests in consolidated subsidiaries | 160 | 143
Shadow View Land And Farming, LLC [Member] |  |
Noncontrolling Interest [Line Items] |  |
Net income (loss) attributable to non-controlling interests in consolidated subsidiaries | $ (2) | $ (2)

X
- Definition Noncontrolling interests in consolidated subsidiaries. + References No definition available. + Details
Name: | rdi_NoncontrollingInterestsInConsolidatedSubsidiaries
Namespace Prefix: | rdi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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
Name: | us-gaap_MinorityInterestLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=rdi_AustraliaCountryCinemasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=rdi_ShadowViewLandAndFarmingLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |