Quarterly report pursuant to Section 13 or 15(d)

STOCK INCENTIVE PLANS AND SHARE-BASED COMPENSATION (Details 3)

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STOCK INCENTIVE PLANS AND SHARE-BASED COMPENSATION (Details 3) (Stock Purchase Plan [Member], USD $)
3 Months Ended 6 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Stock Purchase Plan [Member]
       
Option life (in years) 6 months 6 months 6 months 6 months
Risk-free interest rate 0.15% 0.08% 0.15% 0.08%
Stock price volatility 74.81% 56.27% 74.81% 56.27%
Weighted-average grant date fair value $ 0.51 $ 0.54 $ 0.51 $ 0.54