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Net Income (loss) Per Share
 6 Months Ended
Jun. 30, 2013
Earnings Per Share [Abstract]  
Net Income (loss) Per Share
Net Income (loss) Per Share
Basic net income (loss) per common share is computed using the weighted-average number of common shares outstanding during the period.  Diluted net loss per common share is computed using the weighted-average number of common and dilutive common equivalent shares from stock options, warrants and convertible debt using the treasury stock method.  For all periods presented, diluted net loss per share is the same as basic net loss per share, as the inclusion of equivalent shares from outstanding common stock options, warrants and convertible debt would be anti-dilutive.
The following table sets forth the computation of basic and diluted net loss per share:
 
Three months ended
 June 30,
 
Six months ended
 June 30,
 
2013
 
2012
 
2013
 
2012
Net income (loss)
$
(757,389
)
 
$
(744,069
)
 
$
(2,377,797
)
 
$
(1,837,721
)
Denominator for basic earnings per share - weighted average 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 (a)
—

 
—

 
—

 
—

Denominator for diluted earnings per share - weighted average shares adjusted for dilutive securities
95,988,100

 
79,952,542

 
94,599,406

 
77,416,073

Income (loss) per common share - basic and diluted
$
(0.01
)
 
$
(0.01
)
 
$
(0.03
)
 
$
(0.02
)
(a) 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:
 
Six months ended June 30,
 
2013
 
2012
Outstanding Stock Options
15,917,272

 
12,794,250

Outstanding Warrants
2,132,002

 
7,763,817

Convertible Debt, promissory notes
—

 
5,186,933

Convertible Line of Credit with Related Party
—

 
1,375,137

Convertible Debt, Acquisition
—

 
1,069,808

 
18,049,274

 
28,189,945