Stockholders' Equity (Deficit) (Tables)

9 Months Ended

Sep. 30, 2015

Stockholders' Equity Note [Abstract]

Schedule Of Warrant Activity [Table Text Block]

The following is a summary of warrant activity for the nine months ended September 30, 2015 (in thousands, except per share data):

	Number of		Weighted Average
	Warrants		Exercise Price
Outstanding as of December 31, 2014		29,385	$	4.72
Warrants exercised for cash		(1,678)		4.25
Warrants exercised on a cashless basis*		(304)		3.96
Warrant adjustment due to Cognate price reset		62		3.35
Warrants expired and cancelled		(2,382)		4.66
Adjustment related to prior issued warrants		280		4.41
Outstanding as of September 30, 2015 **		25,363	$	4.76

*The warrants contain “down round protection” and the Company classifies these warrant instruments as liabilities measured at fair value and re-measures these instruments at fair value each reporting period.

** Approximately 14,323,003 warrants issued to Cognate, during the 8-year period from 2008 through 2015, with a weighted average exercise price and remaining contractual term of $3.3 and 4.2 years, respectively. The weighted average exercise price gives effect to adjustments related to the most favored nation clause in these warrants.

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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