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Noncontrolling Interests (Components Of Income Attributable To Noncontrolling Interest) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interest	$ (57)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	$ 104us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	$ (492)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Angelika Center [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interest		173us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = rdi_AngelikaCenterMember	612us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = rdi_AngelikaCenterMember
Australia Country Cinemas [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interest	143us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = rdi_AustraliaCountryCinemasMember	129us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = rdi_AustraliaCountryCinemasMember	86us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = rdi_AustraliaCountryCinemasMember
Shadow View Land And Farming LLC [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interest	(64)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = rdi_ShadowViewLandAndFarmingLlcMember	(50)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = rdi_ShadowViewLandAndFarmingLlcMember	(843)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = rdi_ShadowViewLandAndFarmingLlcMember
Sutton Hill Properties [Member]
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interest	$ (136)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = rdi_SuttonHillPropertiesMember	$ (148)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = rdi_SuttonHillPropertiesMember	$ (347)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = rdi_SuttonHillPropertiesMember

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Amount of Net Income (Loss) attributable to noncontrolling interest.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 55

-Paragraph 4J

-URI http://asc.fasb.org/extlink&oid=31814832&loc=SL4591551-111686

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