Marketable Securities (Details 2) (USD $) In Thousands, unless otherwise specified	Aug. 30, 2014	Mar. 01, 2014
Schedule of amortized cost and estimated fair values of investments by contractual maturity
Amortized Cost, Due within one year	$ 388
Amortized Cost, Due after one year through five years	859
Amortized Cost, Due after five years through 10 years	4,461
Amortized Cost, Due after 10 years through 15 years	1,250
Amortized Cost, Total	6,958
Estimated Market Value, Due within one year	393
Estimated Market Value, Due after one year through five years	870
Estimated Market Value, Due after five years through 10 years	4,461
Estimated Market Value, Due after 10 years through 15 years	1,145
Estimated Market Value, Total	$ 6,869	$ 11,477