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Post-effective amendment to a registration statement that is not immediately effective upon filing

Significant Accounting Policies (Narrative) (Details)

v2.4.0.8
Significant Accounting Policies (Narrative) (Details) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Significant Accounting Policies Details Narrative        
Restricted cash $ 265,131   $ 264,992   
Accrued interest 466   327  
Letter of credit interest rate 0.20%   0.25%  
Options to purchase common shares 7,353,667 2,070,000 6,972,967  
warrants to purchase common shares 8,063,665 493,500 8,112,696  
Convertible debt amount $ 800,000 $ 650,000 $ 800,000  
Convertible debt shares 1,357,143 951,126 1,357,143  
Warrants to purchase common shares outstanding       456,000
Convertible preferred shares       15,403,006
Preferred shares converted to common shares       13,677,274