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Share Based Payments Summary of Restricted Stock Grants Outstanding and Activity (Detail) (Restricted Stock, USD $)
6 Months Ended
Aug. 31, 2013
Restricted Stock
 
Awards  
Grants outstanding, beginning of year 537,405
Granted 802,711
Vested (restriction lapsed) 286,126
Forfeited 181
Grants outstanding, end of year 1,053,809
Price  
Grants outstanding, beginning of year $ 1.72
Granted $ 1.60
Vested (restriction lapsed) $ 1.46
Forfeited $ 1.73
Grants outstanding, end of year $ 1.70