14. Stock-Based Compensation (Details-Assumptions) - $ / shares |
12 Months Ended | |
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Mar. 31, 2019 |
Mar. 31, 2018 |
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| Weighted average assumptions for calculating fair value of stock options | ||
| Fair value of common stock on date of grant | $ 10.71 | $ 61.02 |
| Expected term | 5 years 4 months 17 days | 6 years 5 months 1 day |
| Risk-free interest rate | 2.61% | 2.04% |
| Dividend yield | 0.00% | 0.00% |
| Volatility | 121.50% | 120.80% |
| Fair value of options granted, per share | $ 9 | $ 53.73 |
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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://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. No definition available.
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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