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Business Segments And Geographic Area Information (Summary Of Assets) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
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Segment Reporting Information [Line Items] |  |  |
Total Assets | $ 401,586 us-gaap_Assets | $ 386,807 us-gaap_Assets | $ 428,588 us-gaap_Assets
Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Assets | 327,432 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = rdi_AllSegmentsMember | 347,637 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = rdi_AllSegmentsMember | 408,667 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = rdi_AllSegmentsMember
Corporate Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Assets | $ 74,154 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | $ 39,170 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember | $ 19,921 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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- Details
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- Details
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