Marketable Securities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 01, 2012	Mar. 03, 2012
Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale
Amortized Cost	$ 34,545	$ 19,670
Gross Unrealized Gains	193	188
Gross Unrealized Losses	(248)	(258)
Estimated Market Value, Total	34,490	19,600
Municipal bonds [Member]
Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale
Amortized Cost	34,545	19,670
Gross Unrealized Gains	193	188
Gross Unrealized Losses	(248)	(258)
Estimated Market Value, Total	$ 34,490	$ 19,600

Amount of debt securities categorized neither as held-to-maturity nor trading.

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Reference 9: http://www.xbrl.org/2003/role/presentationRef

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+ Details

- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

+ References+ Details