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Earnings per Share (Details 2) (Options)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Aug. 31, 2014
Aug. 31, 2013
Aug. 31, 2014
Aug. 31, 2013
Options
       
Antidilutive securities, as a result of out of the money        
Antidilutive securities (in shares) 241 603 237 700