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Marketable Securities (Details) - USD ($)
$ in Thousands
Jun. 03, 2017
Mar. 04, 2017
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost $ 7,888  
Estimated Fair Value 7,976  
Municipal bonds    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 7,888 $ 9,595
Gross Unrealized Gains 145 91
Gross Unrealized Losses 57 97
Estimated Fair Value $ 7,976 $ 9,589