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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

A summary of common stock warrant activity for the year ended December 31, 2012 is presented below:

	Warrants		Weighted Average Exercise Price		Weighted Average Remaining Life (Years)
Warrants outstanding, December 31, 2011		871	$	12.23
Granted		1,731	$	1.28
Warrants outstanding, December 31, 2012		2,602	$	4.95		6.34

- 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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