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FAIR VALUE MEASUREMENTS (Details 2) (Fund Of Funds Investment [Member], Fair Value, Inputs, Level 3 [Member], USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 23, 2012
Sep. 25, 2011
Fund Of Funds Investment [Member] | Fair Value, Inputs, Level 3 [Member]
   
Balance at beginning of period $ 59 $ 1,190
Included in other comprehensive income 0 55
Sale of securities (59) 0
Balance at end of period $ 0 $ 1,245