XML 71 R53.htm IDEA: XBRL DOCUMENT
v3.20.2

Operations In Foreign Currency (Summary Of Currency Exchange Rates) (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Australian Dollar [Member] | Spot Rate [Member] |  |  |  |  |
Currency Exchange Rates [Line Items] |  |  |  |  |
Foreign currency exchange rate | 0.6893 | 0.7009 | 0.6893 | 0.7009 | 0.7030
Australian Dollar [Member] | Average Rate [Member] |  |  |  |  |
Currency Exchange Rates [Line Items] |  |  |  |  |
Foreign currency exchange rate | 0.6576 | 0.7001 | 0.6577 | 0.7062 | 0.6954
New Zealand Dollar [Member] | Spot Rate [Member] |  |  |  |  |
Currency Exchange Rates [Line Items] |  |  |  |  |
Foreign currency exchange rate | 0.6446 | 0.6711 | 0.6446 | 0.6711 | 0.6745
New Zealand Dollar [Member] | Average Rate [Member] |  |  |  |  |
Currency Exchange Rates [Line Items] |  |  |  |  |
Foreign currency exchange rate | 0.6183 | 0.6626 | 0.6266 | 0.6721 | 0.6593

X
- Definition Currency Exchange Rates [Line Items] + References No definition available. + Details
Name: | rdi_CurrencyExchangeRatesLineItems
Namespace Prefix: | rdi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Foreign Currency Exchange Rate + References No definition available. + Details
Name: | rdi_ForeignCurrencyExchangeRate
Namespace Prefix: | rdi_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_CurrencyAxis=currency_AUD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=rdi_SpotRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=rdi_AverageRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CurrencyAxis=currency_NZD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |