Quarterly report pursuant to Section 13 or 15(d)

7. Stock-Based Compensation (Details1)

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7. Stock-Based Compensation (Details1)
3 Months Ended 6 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Stock-Based Compensation Details1        
Employee Options Expected Life P5Y10M4D P6Y3M17D P5Y10M4D P5Y11M18D
Risk-free interest rate 0.73% 1.43% 0.73% 1.52%
Dividend yield 0.00% 0.00% 0.00% 0.00%
Volatility 88.00% 83.00% 88.00% 83.00%