10. Share-Based Compensation (Details - Non-vested non-employee) - Non Employee Stock Options [Member] - $ / shares |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Non-vested options outstanding, beginning balance | 0 | 0 | 0 | |
| Options granted | 0 | 834 | 834 | 0 |
| Options vested | (834) | (842) | ||
| Non-vested options outstanding, ending balance | 0 | 0 | ||
| Non-vested weighted-average grant date fair value per share, beginning balance | ||||
| Weighted-average grant date fair value per share, options granted | 20.76 | |||
| Weighted-average grant date fair value per share, options vested | 20.76 | |||
| Non-vested weighted-average grant date fair value per share, ending balance | ||||
| X | ||||||||||
- Definition Net number of share options (or share units) granted during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Definition Number of non-vested options outstanding. No definition available.
|
| X | ||||||||||
- Definition Weighted average grant-date fair value of non-vested options outstanding. No definition available.
|
| X | ||||||||||
- Definition Number of options vested. No definition available.
|
| X | ||||||||||
- Definition Weighted average grant-date fair value of options vested. No definition available.
|
| X | ||||||||||
- Details
|