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Net Income (loss) Per Share (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Computation of basic and diluted net loss per share [Abstract]
Net income (loss)	$ (757,389)		$ (744,069)		$ (2,377,797)		$ (1,837,721)
Denominator for basic earnings per share - weighted average shares (in shares)	95,988,100		79,952,542		94,599,406		77,416,073
Effect of dilutive securities: Stock options and warrants outstanding and convertible debt (in shares)	0	[1]	0	[1]	0	[1]	0	[1]
Denominator for diluted earnings per share - weighted average shares adjusted for dilutive securities (in shares)	95,988,100		79,952,542		94,599,406		77,416,073
Income (loss) per common share - basic and diluted (in dollars per share)	$ (0.01)		$ (0.01)		$ (0.03)		$ (0.02)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)					18,049,274		28,189,945
Outstanding Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)					15,917,272		12,794,250
Outstanding Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)					2,132,002		7,763,817
Convertible Debt, Promissory Notes [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)					0		5,186,933
Revolving Credit Facility [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)					0		1,375,137
Convertible Debt, Acquisition [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)					0		1,069,808
[1] Securities outstanding that were excluded from the computation, prior to the use of the treasury stock method, because they would have been anti-dilutive are as follows:

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

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