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INVESTMENTS IN SECURITIES (Tables)
3 Months Ended
Mar. 30, 2014
INVESTMENTS IN SECURITIES [Abstract]  
Schedule of Available-For-Sale Securities
    March 30, 2014   December 29, 2013
          Fair         Fair
    Amortized Cost   Value   Amortized Cost   Value
    (In thousands)
Cash equivalents:                        
       Fixed income securities       $               162,290       $     162,291       $               103,121       $     103,124
       Other     930     930     56     56
Short-term investments:                        
       Fixed income securities   $ 37,000   $ 37,005   $ 96,902   $ 96,902