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Marketable Securities - Available-for-sale by Maturity Date (Details)
$ in Thousands
Aug. 01, 2015
USD ($)
Schedule of Available-for-sale Securities  
Less than 12 months $ 8,112
Greater than 12 months 17,217
Total 25,329
Certificates of deposit  
Schedule of Available-for-sale Securities  
Less than 12 months 3,948
Greater than 12 months 9,688
Total 13,636
U.S. Government securities  
Schedule of Available-for-sale Securities  
Less than 12 months 500
Greater than 12 months 0
Total 500
U.S. Government sponsored entities  
Schedule of Available-for-sale Securities  
Less than 12 months 0
Greater than 12 months 7,223
Total 7,223
Municipal obligations  
Schedule of Available-for-sale Securities  
Less than 12 months 3,664
Greater than 12 months 306
Total $ 3,970