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Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2012

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								Six Months Ended
		June 30, 2012				June 30, 2011				June 30, 2012				June 30, 2011
Average market price during the period		$	3.05			$	3.51			$	3.11			$	3.29
In the money potential common shares from options excluded			213,311				249,392				239,119				202,867
In the money potential common shares from warrants excluded			1,045,869				1,553,474				1,119,803				1,330,160

		Three Months Ended								Six Months Ended
		June 30, 2012				June 30, 2011				June 30, 2012				June 30, 2011
Out of the money options and warrants excluded:
Stock options with an exercise price of $3.30 per share			100,000				—				100,000				—
Stock options with an exercise price of $3.50 per share			245,000				—				245,000				875,000
Stock options with an exercise price of $3.51 per share			984,670				984,670				984,670				984,670
Stock options with an exercise price of $3.53 per share			211,900				211,900				211,900				211,900
Stock options with an exercise price of $4.00 per share			52,500				52,500				52,500				52,500
Stock options with an exercise price of $5.00 per share			300,000				650,000				300,000				650,000
Stock options with an exercise price of $7.00 per share			100,000				100,000				100,000				100,000
Warrants with an exercise price of $3.60 per share			1,562,500				—				1,562,500				—
Warrants with an exercise price of $5.25 per share			100,000				100,000				100,000				100,000
Total anti-dilutive warrants and options excluded from EPS			3,656,570				2,099,070				3,656,570				2,974,070

Three Months Ended

Six Months Ended

June 30, 2012

June 30, 2011

June 30, 2012

June 30, 2011

Potential common shares from Convertible Preferred Stock excluded from EPS

346,400

3,146,400

346,400

3,146,400

Three Months Ended

Six Months Ended

June 30, 2012

June 30, 2011

June 30, 2012

June 30, 2011

Potential common shares from unvested restricted stock awards excluded from EPS

467,164

495,548

463,234

416,871

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

		Three Months Ended								Six Months Ended
		June 30, 2012				June 30, 2011				June 30, 2012				June 30, 2011
Net loss		$	(15,590,350	)		$	(1,930,553	)		$	(21,072,148	)		$	(7,104,588	)
Accretion of Series G Preferred Stock			—				(1,564,578	)			—				(1,987,977	)
Fair market value of warrants issued to Series G Preferred Stock stockholders			—				(906,150	)			—				(906,150	)
Cumulative dividends on Series G Preferred Stock			(5,000	)			(105,000	)			(15,000	)			(238,479	)
Numerator, basic and diluted net income (loss) available to stockholders		$	(15,595,350	)		$	(4,506,281	)		$	(21,087,194	)		$	(10,237,194	)
Denominator:
Shares used in computation – basic:
Weighted average common shares outstanding			73,234,692				67,873,487				73,199,914				67,512,776
Shares used in computation – diluted:
Weighted average common shares outstanding			73,234,692				67,873,487				73,199,914				67,512,776
Dilutive effect of potential common shares outstanding			—				—				—				—
Shares used in computing diluted net income per share			73,234,692				67,873,487				73,199,914				67,512,776
Net loss per share – basic		$	(0.21	)		$	(0.07	)		$	(0.29	)		$	(0.15	)
Net loss per share – diluted		$	(0.21	)		$	(0.07	)		$	(0.29	)		$	(0.15	)

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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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