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Note 4 - Marketable Securities
6 Months Ended
Jun. 24, 2012
Marketable Securities [Table Text Block]
(4)       Marketable Securities

Marketable securities consisted of the following:

   
As of
 
   
June 24,
2012
   
December 25,
2011
 
Held-to-maturity
           
Municipal securities
  $ 16,563       34,652  
Available-for-sale
               
Municipal securities
    30,584       —  
Trading
               
Mutual funds
    5,838       5,304  
Total
  $ 52,985       39,956  

All held-to-maturity debt securities mature within one year and had aggregate fair values of $16,561 and $34,640 as of June 24, 2012 and December 25, 2011, respectively. Trading securities represent investments held for future needs of our non-qualified deferred compensation plan.