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Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

Basic and Dilutive Net Loss Per Share Computations

The following is a reconciliation of the numerators and denominators of the basic and diluted net income or loss per share computations:

		Three months ended June 30,								Six months ended June 30,
		2013				2012				2013				2012
Net income (loss)		$	(5,868,682	)		$	833,522			$	(12,285,129	)		$	(9,395,917	)
Weighted average shares outstanding used to compute basic and diluted net income or loss per share			39,661,934				24,806,769				38,966,547				23,882,634
Basic and diluted net loss per share		$	(0.15	)		$	0.03			$	(0.32	)		$	(0.39	)

Outstanding Options, Warrants and Restricted Stock Units

The following outstanding potentially dilutive securities were excluded from the computation of diluted net income or loss per share because the effect would have been anti-dilutive as of June 30:

		2013				2012
Options			440,126				854,958
Restricted stock units			3,350,616				1,513,400
Warrants			9,894,909				12,134,483
Total			13,685,651				14,502,841

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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