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2. Income (Loss) Per Common Share (Tables)
3 Months Ended
Mar. 31, 2013
Net loss per share of common stock:  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
    3/31/2013     3/31/2012  
Warrants     1,934,667       1,719,167  
Convertible preferred stock     1,751,005       2,678,909  
Total possible dilution     3,685,672       4,398,076