Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Summary of Fair Value of Option Estimated Using Black-Scholes Pricing Model with Valuation Assumptions

For options granted during the three months ended March 31, 2015, the fair value of each option award was estimated using the Black-Scholes option-pricing model with the following assumptions:

Risk-free interest rate	1.3	%
Expected dividend yield	0	%
Expected volatility	249	%
Expected life	5 years

For options granted during the three months ended March 31, 2014, the fair value of each option award was estimated using the Black-Scholes option-pricing model with the following assumptions:

Risk-free interest rate	1.5% to 2.7	%
Expected dividend yield	0	%
Expected volatility	200	%
Expected life	5-10 years

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

At March 31, 2015 and 2014, the Company excluded the outstanding securities summarized below, which entitle the holders thereof to acquire shares of common stock, from its calculation of earnings per share, as their effect would have been anti-dilutive.

	March 31,
	2015		2014
Series B convertible preferred stock		3,679		3,679
Series G 1.5% convertible preferred stock		257,760,939		228,372,117
10% convertible notes payable		17,034,702		—
Common stock warrants		32,106,094		4,000,000
Common stock options		26,216,668		9,466,668
Total		333,122,082		241,842,464