14. Stockholders' Equity (Details - Warrant activity) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Number of warrants
Warrants outstanding, beginning balance	1,038,365	7,608,154
Warrants issued	0	567,166
Warrants exercised	(265,455)	(7,107,765)
Warrants forfeited	0	(29,190)
Warrants outstanding, ending balance	781,910	1,038,365
Weighted Average Exercise Price
Weighted Average Exercise Price, Warrants outstanding, beginning balance	$ 1.36	$ 0.26
Weighted Average Exercise Price, Warrants issued		1.50
Weighted Average Exercise Price, Warrants exercised		0.24
Weighted Average Exercise Price, Warrants forfeited		0.24
Weighted Average Exercise Price, Warrants outstanding, ending balance	$ 1.36	$ 1.36
custom:AverageRemainingContractualTermAbstract
Average Remaining Contractual Term, Warrants outstanding	1 year 4 months 17 days	2 years 4 months 17 days
Average Remaining Contractual Term, Warrants issued		2 years 3 months