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Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Mar. 03, 2012 | Feb. 26, 2011 | Feb. 27, 2010
Consolidated Statements Of Shareholders' Equity [Abstract] |  |  |
Unrealized gain (loss) on marketable securities, tax | $ 8 | $ 88 | $ 129
Unrealized loss on pension obligation, tax | $ 759 | $ 288 | $ 573
Dividends, per share | $ 0.326 | $ 0.326 | $ 0.326

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