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Convertible Notes (Tables)
6 Months Ended
Jun. 30, 2012
Convertible Notes
    June 30, 2012     December 31, 2011  
Convertible, unsecured promissory note, due 2012 (4.0%)   $ 2,707,301     $ 2,832,301  
Less current portion     500,000       375,000  
Total debt, less current portion   $ 2,207,301     $ 2,457,301