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Noncontrolling Interests (Components Of Noncontrolling Interests) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	$ 4,612rdi_NoncontrollingInterestsInConsolidatedSubsidiaries	$ 4,607rdi_NoncontrollingInterestsInConsolidatedSubsidiaries
Australia Country Cinemas [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	410rdi_NoncontrollingInterestsInConsolidatedSubsidiaries / dei_LegalEntityAxis = rdi_AustraliaCountryCinemasMember	532rdi_NoncontrollingInterestsInConsolidatedSubsidiaries / dei_LegalEntityAxis = rdi_AustraliaCountryCinemasMember
Shadow View Land And Farming LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	2,000rdi_NoncontrollingInterestsInConsolidatedSubsidiaries / dei_LegalEntityAxis = rdi_ShadowViewLandAndFarmingLlcMember	1,862rdi_NoncontrollingInterestsInConsolidatedSubsidiaries / dei_LegalEntityAxis = rdi_ShadowViewLandAndFarmingLlcMember
Sutton Hill Properties [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in consolidated subsidiaries	$ 2,202rdi_NoncontrollingInterestsInConsolidatedSubsidiaries / dei_LegalEntityAxis = rdi_SuttonHillPropertiesMember	$ 2,213rdi_NoncontrollingInterestsInConsolidatedSubsidiaries / dei_LegalEntityAxis = rdi_SuttonHillPropertiesMember

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Noncontrolling interests in consolidated subsidiaries.

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