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Marketable Securities (Details 1) (USD $)
In Thousands, unless otherwise specified
Mar. 01, 2014
Schedule of length of time that available-for-sale securities were in continuous unrealized loss positions  
Less Than 12 Months, Fair Value $ 3,171
Less Than 12 Months, Unrealized Losses (63)
Greater Than or Equal to 12 Months, Fair Value 1,999
Greater Than or Equal to 12 Months, Unrealized Losses (273)
Total Fair Value 5,170
Total Unrealized Losses (336)
Municipal bonds
 
Schedule of length of time that available-for-sale securities were in continuous unrealized loss positions  
Less Than 12 Months, Fair Value 3,171
Less Than 12 Months, Unrealized Losses (63)
Greater Than or Equal to 12 Months, Fair Value 1,999
Greater Than or Equal to 12 Months, Unrealized Losses (273)
Total Fair Value 5,170
Total Unrealized Losses $ (336)