8. Stock options and Warrants (Details Narrative) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
| Share based compensation expense | $ 194,000 | $ 245,000 | ||
| Proceeds from warrant exercises | 273,000 | 647,000 | ||
| Warrants [Member] | ||||
| Aggregate intrinsic value of warrants outstanding | $ 4,231,000 | $ 4,231,000 | ||
| Warrants exercised | 3,138,993 | |||
| Proceeds from warrant exercises | $ 202,000 | |||
| Options [Member] | ||||
| Options granted | 4,687,500 | |||
| Option exercise price | $ 0.08 | |||
| Share based compensation expense | 85,000 | $ 102,000 | $ 183,000 | $ 535,000 |
| Aggregate intrinsic value of options outstanding | 2,553,000 | 2,553,000 | ||
| Unamortized compensation expense | $ 164,000 | $ 164,000 | ||
| Weighted average life of options | 5 years 2 months 12 days | |||
| Options [Member] | Board of Directors [Member] | ||||
| Options granted | 4,687,500 | |||
| Option exercise price | $ 0.08 | |||
| Fair value of options at grant date | $ 328,000 | |||
| X | ||||||||||
- Definition Fair value of options at grant date No definition available.
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash inflow associated with the amount received from holders exercising their stock warrants. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of noncash expense for share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of non-option equity instruments exercised by participants. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Gross number of share options (or share units) granted during the period. No definition available.
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. 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 Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options. No definition available.
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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