Registration of securities issued in business combination transactions

10. Share-Based Compensation (Details - Non-Vested employee Option activity)

v3.19.1
10. Share-Based Compensation (Details - Non-Vested employee Option activity) - 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 617,267 1,048,474 1,048,474  
Options granted 0 0 100,000 700,000
Options forfeited     (6,667)  
Options vested     (524,540) (340,930)
Non-vested options outstanding, ending balance     617,267 1,048,474
Non-vested weighted-average grant date fair value per share, beginning balance $ 2.65 $ 2.86 $ 2.86  
Weighted-average grant date fair value per share, options granted     2.63 $ 2.70
Weighted-average grant date fair value per share, options forfeited     2.91  
Weighted-average grant date fair value per share, options vested     3.05  
Non-vested weighted-average grant date fair value per share, ending balance     $ 2.65 $ 2.86