Quarterly report pursuant to Section 13 or 15(d)

Loss Per Share (Details)

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Loss Per Share (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Loss Per Share (Textual) [Abstract]        
Potential common shares 26,022,072 26,263,152 26,836,546 27,375,394
Number of common shares to be issued on conversion of preferred stock 12,110,750   12,110,750  
Common stock issued as a result of common stock option and common stock warrants exercises     748,783