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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2013

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Reconciliation of the numerators and denominators used in computing basic and diluted net income per share

		Three Months Ended
		March 31, 2013				March 31, 2012
Net income (loss)		$	(9,665,379	)		$	(5,481,799	)
Cumulative dividends on Series G Preferred Stock			—				(10,000	)
Numerator, basic and diluted net income (loss) available to stockholders		$	(9,665,379	)		$	(5,491,799	)
Denominator:
Shares used in computation – basic:
Weighted average common shares outstanding			77,344,388				73,165,136
Shares used in computation – diluted:
Weighted average common shares outstanding			77,344,388				73,165,136
Dilutive effect of potential common shares outstanding			—				—
Shares used in computing diluted net income per share			77,344,388				73,165,136
Net income (loss) per share – basic		$	(0.12	)		$	(0.08	)
Net income (loss) per share – diluted		$	(0.12	)		$	(0.08	)

In the money potential common shares [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Schedule of antidilutive securities excluded from computation of earnings per share

		Three Months Ended
		March 31, 2013				March 31, 2012
Average market price during the period		$	3.24			$	3.18
In the money potential common shares from options excluded			396,105				269,699
In the money potential common shares from warrants excluded			555,877				1,202,529

Out of money potential common shares [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Schedule of antidilutive securities excluded from computation of earnings per share

		Three Months Ended
		March 31, 2013				March 31, 2012
Out of the money options and warrants excluded:
Stock options with an exercise price of $3.30 per share			100,000				—
Stock options with an exercise price of $3.43 per share			40,000				—
Stock options with an exercise price of $3.50 per share			345,000				245,000
Stock options with an exercise price of $3.51 per share			959,500				984,670
Stock options with an exercise price of $3.53 per share			194,100				211,900
Stock options with an exercise price of $3.90 per share			20,000				—
Stock options with an exercise price of $4.00 per share			52,500				52,500
Stock options with an exercise price of $5.00 per share			200,000				400,000
Stock options with an exercise price of $7.00 per share			100,000				100,000
Warrants with an exercise price of $4.32 per share			—				1,302,083
Warrants with an exercise price of $3.60 per share			1,562,500				—
Warrants with an exercise price of $5.25 per share			—				100,000
Total anti-dilutive warrants and options excluded from EPS			3,573,600				3,396,153

Convertible preferred stock excluded from EPS [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Schedule of antidilutive securities excluded from computation of earnings per share

		Three Months Ended
		March 31, 2013				March 31, 2012
Potential common shares from Convertible Preferred Stock excluded from EPS			206,400				346,400

Unvested restricted stock awards excluded from EPS [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Schedule of antidilutive securities excluded from computation of earnings per share

		Three Months Ended
		March 31, 2013				March 31, 2012
Potential common shares from unvested restricted stock awards excluded from EPS			505,503				495,304

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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



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 128

-Paragraph 40

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from continuing operations, including the effect that has been given to preferred dividends.

+ 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 (a)

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

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