Fair Value Measurements (Details Textual) (USD $) In Thousands, unless otherwise specified	Mar. 01, 2014	Mar. 02, 2013
Fair Value Disclosures [Abstract]
Short-term available for sale securities	$ 204	$ 26,007
Available-for-sale securities, non-current	11,273	12,807
Restricted investments	2,540	4,639
Mutual fund investments	$ 400

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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+ Details