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Derivative Instruments (Set Forth Terms Of Interest Rate Swap And Cap Derivative Instruments) (Details) (USD $) | 9 Months Ended
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Sep. 30, 2014
Interest Rate Swap Due June 30, 2016 [Member] |
Derivative [Line Items] |
Notional Amount | $ 62,750,000
Pay fixed rate | 5.50%
Receive Variable Rate | 2.715%
Maturity Date | Jun. 30, 2016
Interest Rate Swap 1 Due October 31, 2017 [Member] |
Derivative [Line Items] |
Notional Amount | 27,913,000
Pay fixed rate | 1.20%
Receive Variable Rate | 0.233%
Maturity Date | Oct. 31, 2017
Interest Rate Swap 2 Due October 31, 2017 [Member] |
Derivative [Line Items] |
Notional Amount | 31,500,000
Pay fixed rate | 1.15%
Receive Variable Rate | 0.15%
Maturity Date | Oct. 31, 2017
Interest Rate Cap Due June 1, 2018 [Member] |
Derivative [Line Items] |
Notional Amount | $ 7,500,000
Pay fixed rate | 4.00%
Receive Variable Rate | 0.00%
Maturity Date | Jun. 01, 2018

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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- Definition Derivative, Fixed Interest Rate, Contract Rate + References No definition available. + Details
Name: | rdi_DerivativeFixedInterestRateContractRate
Namespace Prefix: | rdi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Definition Variable interest rate in effect as of the balance sheet date related to the interest rate derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeVariableInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant