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6. Stock-Based Compensation (Details - Assumptions) (USD $)
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3 Months Ended | 9 Months Ended | ||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2013
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Dec. 31, 2012
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| Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract] | ||||
| Expected life | 5 years 1 month 6 days | 5 years | 5 years 9 months 29 days | 5 years 9 months 14 days |
| Risk-free interest rate | 1.75% | 0.62% | 1.44% | 0.72% |
| Dividend yield | 0.00% | 0.00% | 0.00% | 0.00% |
| Volatility | 82.00% | 89.00% | 85.00% | 88.00% |
| Fair value of options granted | $ 2.16 | $ 6.51 | $ 2.11 | $ 8.05 |
| 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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- Details
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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
Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. 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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