Income Taxes Income Taxes (Details - Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Permanent difference related to change in fair value of common stock warrants	$ 80,500,000
Tax carryforward amount	239,300,000
Income tax, uncertain tax positions	0	$ 0
Stock Option Exercise Tax Benefit
Operating Loss Carryforwards [Line Items]
Tax carryforward amount	$ 22,000,000