8. Options and Warrants (Details-Stock compensation expense) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Total stock-based compensation expense	$ 595,692	$ 683,036
Option Grants
Total stock-based compensation expense	473,192	603,536
Stock Grants
Total stock-based compensation expense	0	0
Non-Employee Option Grants
Total stock-based compensation expense	11,500	79,500
Non-Employee Stock Grants
Total stock-based compensation expense	0	0
Non-Employee Stock Warrants
Total stock-based compensation expense	$ 111,000	$ 0