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Marketable Securities - Available-for-sale by Maturity Date (Details)
$ in Thousands
Jan. 28, 2017
USD ($)
Schedule of Available-for-sale Securities  
Less than 12 months $ 8,479
Greater than 12 months 19,555
Total 28,034
Certificates of deposit  
Schedule of Available-for-sale Securities  
Less than 12 months 6,626
Greater than 12 months 6,450
Total 13,076
U.S. Government securities  
Schedule of Available-for-sale Securities  
Less than 12 months 400
Greater than 12 months 0
Total 400
U.S. Government sponsored entities  
Schedule of Available-for-sale Securities  
Less than 12 months 0
Greater than 12 months 7,643
Total 7,643
Municipal obligations  
Schedule of Available-for-sale Securities  
Less than 12 months 1,453
Greater than 12 months 5,462
Total $ 6,915