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Marketable Securities - Available-for-sale by Maturity Date (Details) (USD $)
In Thousands, unless otherwise specified
Oct. 26, 2013
Schedule of Available-for-sale Securities  
Less than 12 months $ 11,799
Greater than 12 months 13,568
Total 25,367
Certificates of deposit
  
Schedule of Available-for-sale Securities  
Less than 12 months 3,696
Greater than 12 months 1,971
Total 5,667
U.S. Government securities
  
Schedule of Available-for-sale Securities  
Less than 12 months 3,505
Greater than 12 months 1,500
Total 5,005
U.S. Government sponsored entities
  
Schedule of Available-for-sale Securities  
Less than 12 months 0
Greater than 12 months 5,051
Total 5,051
Municipal obligations
  
Schedule of Available-for-sale Securities  
Less than 12 months 4,598
Greater than 12 months 5,046
Total $ 9,644