7. Stock-Based Compensation (Details-Assumptions) - $ / shares |
3 Months Ended | |
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Jun. 30, 2016 |
Jun. 30, 2015 |
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| Weighted average assumptions for calculating fair value of stock options | ||
| Expected term | 7 years 5 months 12 days | 8 years 11 months 16 days |
| Risk-free interest rate | 1.40% | 2.18% |
| Dividend yield | 0.00% | 0.00% |
| Volatility | 92.40% | 86.00% |
| Fair value of options granted, per share | $ 3.46 | $ 5.50 |
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- Definition Weighted average assumptions for calculating fair value of stock options [Abstract] No definition available.
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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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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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