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Consolidated Statements of Comprehensive Earnings (Unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Nov. 30, 2013 | Dec. 01, 2012 | Nov. 30, 2013 | Dec. 01, 2012
Statement of Other Comprehensive Income [Abstract] |  |  |  |
Tax expense (benefit) on marketable securities | $ 56 | $ 0 | $ (95) | $ 5
Tax expense (benefit) on foreign currency hedge | $ 184 | $ 0 | $ 264 | $ 0

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