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Stock Based Compensation (Tables)
9 Months Ended
Nov. 30, 2012
Notes to Financial Statements  
Weighted-average Black-Scholes assumptions
  2013 2012
Expected life 4 years 4 years
Risk free interest rate .29% - .37% .71% - 1.17%
Expected volatility 52% - 59% 29% - 31%
Expected dividend yield 0% 0%