XML 162 R128.htm IDEA: XBRL DOCUMENT
v3.19.1

Insurance Recoveries On Impairment And Related Losses Due To Earthquake (Narrative) (Details) $ in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2017 NZD ($) | May 31, 2017 USD ($) | Apr. 30, 2017 NZD ($) | Apr. 30, 2017 USD ($) | Dec. 31, 2018 NZD ($) | Dec. 31, 2017 NZD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 NZD ($) | Dec. 31, 2016 USD ($)
Insurance Recoveries on Impairment and Related Losses Due to Earthquake [Abstract] |  |  |  |  |  |  |  |  |
Insurance coverage limit |  |  | $ 36,000 | $ 25,000 |  |  |  |  |
Proceeds from insurance settlement | $ 28,900 | $ 20,000 |  |  |  |  |  | $ 7,100 | $ 5,000
Request for additional funds |  |  |  |  | $ 5,000 |  |  |  |
Total insurance gains |  |  |  |  |  | $ 14,849 | $ 10,740 |  |

X
- Definition Asset Impairment and Other Losses Recoverable through Insurance Claim [Abstract] + References No definition available. + Details
Name: | rdi_AssetImpairmentAndOtherLossesRecoverableThroughInsuranceClaimAbstract
Namespace Prefix: | rdi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Impact Of Current Retained Earnings, Net Of Tax + References No definition available. + Details
Name: | rdi_ImpactOfCurrentRetainedEarningsNetOfTax
Namespace Prefix: | rdi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Insurance Recoveries, Coverage Limit + References No definition available. + Details
Name: | rdi_InsuranceRecoveriesCoverageLimit
Namespace Prefix: | rdi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Insurance Recoveries, Request For Additional Funds + References No definition available. + Details
Name: | rdi_InsuranceRecoveriesRequestForAdditionalFunds
Namespace Prefix: | rdi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Proceeds From Insurance Settlements + References No definition available. + Details
Name: | rdi_ProceedsFromInsuranceSettlements
Namespace Prefix: | rdi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration