2. Summary of Significant Accounting Policies (Details) - shares	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Antidilutive shares excluded from EPS	66,789,744	35,468,815
Options [Member]
Antidilutive shares excluded from EPS	35,313,541	23,724,256
Warrants [Member]
Antidilutive shares excluded from EPS	21,507,270	9,342,892
Convertible Notes [Member]
Antidilutive shares excluded from EPS	9,968,933	2,401,667