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FAIR VALUE MEASUREMENT (Details 2) (Fair Value, Inputs, Level 3 [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 30, 2012
Dec. 25, 2011
Dec. 26, 2010
Fair Value, Inputs, Level 3 [Member]
     
Balance at beginning of year $ 59 $ 1,190 $ 1,116
Included in other comprehensive income 0 (19) 74
Sale of securities (59) (1,112) 0
Balance at end of year $ 0 $ 59 $ 1,190