Other Liabilities (Summary Of Other Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Aug. 29, 2014
Other Liabilities [Abstract]
Lease liability	$ 5,900us-gaap_CapitalLeaseObligationsCurrent	$ 5,900us-gaap_CapitalLeaseObligationsCurrent
Security deposit payable	202us-gaap_DepositLiabilityCurrent	202us-gaap_DepositLiabilityCurrent
Accrued pension	1,026	855
Other	62us-gaap_OtherSundryLiabilitiesCurrent	12us-gaap_OtherSundryLiabilitiesCurrent
Other current liabilities	7,190us-gaap_OtherLiabilitiesCurrent	6,969us-gaap_OtherLiabilitiesCurrent
Foreign withholding taxes	7,083rdi_ForeignWithholdingTaxesNoncurrent	7,016rdi_ForeignWithholdingTaxesNoncurrent
Straight-line rent liability	9,107us-gaap_AccruedRentCurrentAndNoncurrent	9,246us-gaap_AccruedRentCurrentAndNoncurrent
Environmental reserve	1,656rdi_EnvironmentalReserveNoncurrent	1,656rdi_EnvironmentalReserveNoncurrent
Accrued pension	6,614	6,740	7,500
Interest rate swap	2,243us-gaap_DerivativeLiabilitiesNoncurrent	2,177us-gaap_DerivativeLiabilitiesNoncurrent
Acquired leases	1,164rdi_AcquiredLeasesCurrentAndNoncurrent	1,265rdi_AcquiredLeasesCurrentAndNoncurrent
Other	7,244	7,394
Deferred Revenue - Real Estate	4,753us-gaap_DeferredRevenueNoncurrent	5,083us-gaap_DeferredRevenueNoncurrent
Other liabilities	$ 39,864us-gaap_OtherLiabilitiesNoncurrent	$ 40,577us-gaap_OtherLiabilitiesNoncurrent

Acquired Leases Current And Noncurrent

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Environmental Reserve, Noncurrent

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Foreign Withholding Taxes, Noncurrent

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No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for contractual rent under lease arrangements.

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Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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The noncurrent portion of deferred revenue amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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This represents the current liability recognized in the balance sheet that is associated with the defined benefit pension plans.

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This represents the noncurrent liability recognized in the balance sheet that is associated with the defined benefit pension plans.

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The current portion, due within one year or one operating cycle, if longer, of deposits held other than customer deposits.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Aggregated carrying amounts of obligations as of the balance sheet date, excluding long-term debt, incurred as part of the normal operations that are expected to be paid after one year or beyond the normal operating cycle, if longer. Alternate captions include Total Deferred Credits and Other Liabilities.

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Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).

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Obligations not otherwise itemized or categorized in the footnotes to the financial statements that are due within one year or operating cycle, if longer, from the balance sheet date.

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