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Acquisitions, Disposals, And Assets Held For Sale (Summary Of Discontinued Operations) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Income (loss) from discontinued operations, net of tax	$ (85)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Indooroopilly Property [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Revenue	793us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = rdi_IndooroopillyPropertyMember
Less: operating expense	560us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = rdi_IndooroopillyPropertyMember
Less: impairment expense	318us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = rdi_IndooroopillyPropertyMember
Income (loss) from discontinued operations, net of tax	$ (85)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = rdi_IndooroopillyPropertyMember

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Amount of operating expenses attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of other expense attributable to disposal group.

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Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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