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Marketable Securities - Available-for-sale by Maturity Date (Details) (USD $)
In Thousands, unless otherwise specified
Aug. 02, 2014
Schedule of Available-for-sale Securities  
Less than 12 months $ 8,733
Greater than 12 months 16,746
Total 25,479
Certificates of deposit
  
Schedule of Available-for-sale Securities  
Less than 12 months 3,953
Greater than 12 months 4,009
Total 7,962
U.S. Government securities
  
Schedule of Available-for-sale Securities  
Less than 12 months 1,001
Greater than 12 months 501
Total 1,502
U.S. Government sponsored entities
  
Schedule of Available-for-sale Securities  
Less than 12 months 0
Greater than 12 months 9,138
Total 9,138
Municipal obligations
  
Schedule of Available-for-sale Securities  
Less than 12 months 3,779
Greater than 12 months 3,098
Total $ 6,877