Marketable Securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
May 31, 2014	Mar. 01, 2014
Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale
Amortized Cost	$ 10,913	$ 11,719
Gross Unrealized Gains	119	94
Gross Unrealized Losses	(234)	(336)
Estimated Market Value, Total	10,798	11,477
Municipal bonds [Member]
Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale
Amortized Cost	10,913	11,719
Gross Unrealized Gains	119	94
Gross Unrealized Losses	(234)	(336)
Estimated Market Value, Total	$ 10,798	$ 11,477

This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

No definition available.

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

+ References

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Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

+ References

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-Name Accounting Standards Codification

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Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

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