Fair Value Measurements (Details Textual) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2013	Mar. 02, 2013
Fair Value Disclosures [Abstract]
Short-term available for sale securities	$ 2,689	$ 26,007
Available-for-sale Securities, Debt Securities, Noncurrent	11,103	12,807
Restricted Cash and Cash Equivalents, Noncurrent	23,678	4,639
Mutual fund investments	$ 800

Total of debt securities categorized neither as held-to-maturity nor trading which are intended be sold or mature within one year from the balance sheet date or the normal operating cycle, whichever is longer.

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-Name Accounting Research Bulletin (ARB)

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+ Details

- Definition

Total of debt securities categorized neither as held-to-maturity nor trading which are intended be sold or mature more than one year from the balance sheet date or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Statement of Financial Accounting Standard (FAS)

-Number 115

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

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+ Details