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13. Stock-Based Compensation (Details 3) (USD $)
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12 Months Ended | |
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Mar. 31, 2013
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Mar. 31, 2012
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| Stock-Based Compensation Details 3 | ||
| Fair value of common stock on date of grant | $ 6.41 | $ 11.22 |
| Expected Term | 5 years 9 months 18 days | 5 years 9 months |
| Risk-free interest rate | 0.72% | 1.27% |
| Dividend yield | 0.00% | 0.00% |
| Volatility | 88.00% | 83.50% |
| X | ||||||||||
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- Definition
Employee options expected life No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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