Property And Equipment (Schedule Of Property And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Property And Equipment [Abstract]
Land	$ 60,851us-gaap_Land	$ 62,024us-gaap_Land
Building and improvements	114,785us-gaap_BuildingsAndImprovementsGross	120,913us-gaap_BuildingsAndImprovementsGross
Leasehold interests	52,240rdi_LeaseholdInterestsGross	51,494rdi_LeaseholdInterestsGross
Fixtures and equipment	102,161us-gaap_FurnitureAndFixturesGross	107,286us-gaap_FurnitureAndFixturesGross
Total cost	330,037us-gaap_PropertyPlantAndEquipmentGross	341,717us-gaap_PropertyPlantAndEquipmentGross
Less: accumulated depreciation	(151,615)	(154,828)
Operating property, net	$ 178,422us-gaap_PropertyPlantAndEquipmentNet	$ 186,889us-gaap_PropertyPlantAndEquipmentNet

Leasehold interests gross

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 1

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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- Definition

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

+ References

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- Definition

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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-Publisher FASB

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-Subparagraph (SX 210.5-02.13)

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