Options and Equity Warrants (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Fair Value, Weighted Average Assumptions

The fair values of the options and equity warrants granted, were estimated based on the following weighted average assumptions:

	Year Ended December 31,
	2013	2012	2011
Risk-free interest rate	0.14%-1.40%	0.61%- 0.86%	0.83%- 2.24%
Expected dividend yield	0	0	0
Expected life	1-5 years	5 years	5 years
Expected volatility	89.727%-118.22%	108.76%-112.35%	104.29%-105.91%
Weighted average grant date fair value for options and equity warrants issued	$0.14 per option/warrant for 4,120,000 options/equity warrants	$0.23 per option/warrant for 1,499,000 options/equity warrants	$0.26 per option/warrant for 1,310,000 options/equity warrants

Stock Option Activity

Unvested stock option activity for non-employees:

	Number of  Options		Weighted  Average Exercise  Price		Weighted  Average  Remaining  Contracted  Term (Years)	Aggregate Intrinsic Value
Outstanding January 1, 2011	102,084		$	2.63	3.54	—
Granted	200,000		0.21		10.00	—
Vested	(45,834	)	2.81		1.50	—
Forfeited	—		—		—	—
Outstanding December 31, 2011	256,250		$	0.71	8.50	—
Granted	300,000		0.29		9.50	—
Vested	(345,828	)	0.53		7.95	—
Forfeited	—		—		—	—
Outstanding December 31, 2012	210,422		$	0.40	9.68	—
Granted	470,833		0.25		9.61	—
Vested	(210,422	)	0.40		—	—
Forfeited	—		—		—	—
Outstanding December 31, 2013	470,833		$	0.25	9.61	—

Stock option activity for non-employees during the year:

	Number of  Options		Weighted  Average Exercise  Price		Weighted  Average  Remaining  Contracted  Term (Years)	Aggregate Intrinsic Value
Outstanding January 1, 2011	2,848,432		$	2.03	5.80	—
Granted	280,000		0.27		9.88	—
Exercised	—		—		—	—
Forfeited	—		—		—	—
Outstanding December 31, 2011	3,128,432		$	1.87	5.25	—
Granted	300,000		0.29		9.50	—
Exercised	—		—		—	—
Forfeited	—		—		—	—
Outstanding December 31, 2012	3,428,432		$	1.73	4.71	—
Granted	850,000		0.56		9.53	—
Exercised	—		—		—	—
Forfeited	(150,000	)	2.00		—	—
Outstanding December 31, 2013	4,128,432		$	1.48	5.01	—
Vested and expected to vest at December 31, 2013	3,657,599		$	1.86	4.53	—
Exercisable at December 31, 2013	3,657,599		$	1.86	4.53	—

Unvested stock option activity for employees:

	Number of  Options		Weighted  Average Exercise  Price		Average  Remaining  Contracted  Term (Years)	Aggregate Intrinsic  Value
Outstanding January 1, 2011	50,555		$	1.33	7.60	—
Granted	140,000		0.33		9.93	—
Vested	(42,222	)	0.95		7.38	—
Forfeited	—		—		0	—
Outstanding December 31, 2011	148,333		$	0.49	9.52	—
Granted	509,708		0.43		9.52	—
Vested	(131,668	)	0.36		9.04	—
Forfeited	(10,000	)	1.30		5.50	—
Outstanding December 31, 2012	516,373		$	0.45	9.43	—
Granted	595,000		0.24		9.20	—
Vested	(586,373	)	0.38		9.26	—
Forfeited	—		—		0	—
Outstanding December 31, 2013	525,000		$	0.29	8.38	—

Stock option activity during the years ended December 31, 2011, 2012 and 2013 is as follows:

Stock option activity for employees:

	Number of  Options		Weighted Average Exercise Price		Weighted Average Remaining Contracted Term (Years)	Aggregate Intrinsic Value
Outstanding January 1, 2011	7,222,480		$	2.35	6.21	—
Granted	1,030,000		0.41		9.51	—
Forfeited	—		—		0	—
Outstanding December 31, 2011	8,252,480		$	2.11	5.75	—
Granted	1,199,000		0.45		9.51	—
Forfeited	(10,000	)	1.30		5.50	—
Outstanding December 31, 2012	9,441,480		$	1.90	5.35	—
Granted	1,170,000		0.36		9.49	—
Forfeited	—		—		0	—
Outstanding December 31, 2013	10,611,480		$	1.73	4.92	—
Vested and expected to vest at December 31, 2013	10,086,480		$	1.79	4.55	—
Exercisable at December 31, 2013	10,086,480		$	1.79	4.55	—