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INVESTMENTS IN UNCONSOLIDATED COMPANIES (Details) - USD ($)
3 Months Ended
Feb. 23, 2016
Mar. 26, 2017
Mar. 27, 2016
Dec. 25, 2016
Investments in unconsolidated companies and joint ventures        
Investments in unconsolidated companies   $ 121,752,000   $ 242,382,000
Intangible asset - newswire content   11,000    
Write down of certain unconsolidated investments   123,000,000 $ 892,000  
Goodwill, Impairment Loss   $ 0 0  
Home Finder LLC | Disposal Group, Disposed of by Sale, Not Discontinued Operations        
Investments in unconsolidated companies and joint ventures        
Write down of certain unconsolidated investments     $ 900,000  
Home Finder LLC | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Affiliate Agreement        
Investments in unconsolidated companies and joint ventures        
Term of Agreement 3 years      
Career Builder LLC        
Investments in unconsolidated companies and joint ventures        
Ownership interest (as a percent)   15.00%    
Investments in unconsolidated companies   $ 115,646,000   236,936,000
Write down of certain unconsolidated investments   123,000,000    
Other        
Investments in unconsolidated companies and joint ventures        
Investments in unconsolidated companies   $ 6,106,000   $ 5,446,000