Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2013
Significant Accounting Policies [Abstract]  
Potential shares of common stock that are not included in the calculation of diluted net loss per share
     December 31,
2013
   December 31,
2012
Stock options outstanding
                 5,557             5,557   
Warrants to purchase common stock
                 1,404,599             1,749,874   
Debentures convertible into common stock
                 441,768             368,726   
Preferred shares convertible into common stock
                 239,265             582,233   
Total
                 2,091,189             2,706,390