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Consolidated Statements of Comprehensive Earnings (Unaudited) (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Aug. 31, 2013
Sep. 01, 2012
Aug. 31, 2013
Sep. 01, 2012
Statement of Other Comprehensive Income [Abstract]        
Tax expense (benefit) on marketable securities $ (122) $ (7) $ (151) $ 5
Tax expense (benefit) on foreign currency hedge $ 104 $ 0 $ 80 $ 0