Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2014

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

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Following is a summary of the amount included as stock-based compensation expense in the accompanying consolidated statements of operations and comprehensive loss:

	Three Months Ended March 31, 2014 (Unaudited)		Three Months Ended March 31, 2013 (Unaudited)		Year Ended December 31, 2013
Stock options:
Research and development expense	$	38,000	$	42,000	$	191,000
General and administrative expense		224,000		112,000		1,246,000
Total stock-based compensation expense	$	262,000	$	154,000	$	1,437,000

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

The following table summarizes Option activity:

	Shares		Weighted Average Exercise Price		Average Remaining Contractual Term (Years)		Intrinsic Value
Outstanding at December 31, 2013		25,721,000	$	0.19
Granted		—		—
Exercised		—		—
Forfeited		—		—
Expired		—		—
Outstanding at March 31, 2014		25,721,000	$	0.19		8.88	$	8,416,233
Exercisable at March 31, 2014		10,089,662	$	0.19		8.89	$	4,049,376

Schedule of Common Stock, Capital Shares Reserved for Future Issuance [Table Text Block]

As of March 31, 2013, the Company had reserved shares of its common stock for future issuance as follows:

	Shares Reserved
Stock options outstanding		25,721,000
Available for future grants under the Stock Incentive Plan		40,000,000
Warrants		38,425,745
Total Shares reserved		104,146,745