Equity-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2014

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

Weighted Average Assumptions

The fair values of the options and equity warrants granted in the three months ended March 31, 2013, were estimated based on the following weighted average assumptions:

	Three Months Ended March 31,
	2014	2013
Risk-free interest rate	—	0.14% - 0.38%
Expected dividend yield	—	—
Expected lives	—	1 year to 2.5 years
Expected volatility	—	87.727% - 118.222%
Weighted average grant date fair value for options and equity warrants issued	—	$0.09 per warrant for 1,500,000 options equity/warrants

Stock Option Activity

Stock option activity for employees:

	Number of Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Outstanding January 1, 2014	10,611,480	$	1.73	4.92	$	—
Granted	—	—		—	—
Forfeited	—	—		—	—
Outstanding March 31, 2014	10,611,480	$	1.73	4.67	$	—
Vested and expected to vest March 31, 2014	10,303,147	$	1.76	4.41	$	—
Exercisable March 31, 2014	10,303,147	$	1.76	4.41	$	—

No options to purchase shares were granted to employees during the three months ended March 31, 2014.

Unvested stock option activity for employees:

	Number of Options		Weighted Average Exercise  Price		Average  Remaining Contractual  Term  (Years)	Aggregate  Intrinsic Value
Outstanding January 1, 2014	525,000		$	0.29	8.38	$	—
Granted	—		—		—	—
Vested	(216,667	)	0.27		9.34	28,000
Forfeited	—		—		—	—
Outstanding March 31, 2014	308,333		$	0.30	7.28	$	31,000

Stock option activity for non-employees:

	Number of Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Outstanding January 1, 2014	4,128,432	$	1.48	5.01	$	—
Granted	—	—		—	—
Exercised	—	—		—	—
Forfeited	—	—		—	—
Outstanding March 31, 2014	4,128,432	$	1.48	4.76	$	—
Vested and expected to vest March 31, 2014	3,832,599	$	1.79	4.47	$	—
Exercisable March 31, 2014	3,832,599	$	1.79	4.47	$	—

No options to purchase shares were granted to non-employees during the three months ended March 31, 2014.

Unvested stock option activity for non-employees during the year:

	Number of Options		Weighted Average Exercise  Price		Weighted  Average Remaining  Contractual Term  (Years)	Aggregate  Intrinsic Value
Outstanding January 1, 2014	470,833		$	0.25	9.61	$	—
Options granted	—		—		—	—
Options vested	(175,000	)	0.25		9.36	26,000
Options forfeited	—		—		—	—
Outstanding March 31, 2014	295,833		$	0.25	9.36	$	44,000