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Summary of Significant Accounting Policies (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Schedule of anti-dilutive securities excluded from computation of earnings per share        
Average market price during the period $ 3.72 $ 2.78 $ 3.32 $ 3.11
Excluded from options [Member]
       
Schedule of anti-dilutive securities excluded from computation of earnings per share        
Potential common shares excluded from EPS   73,997 321,755 162,213
Excluded from warrants [Member]
       
Schedule of anti-dilutive securities excluded from computation of earnings per share        
Potential common shares excluded from EPS   676,542 1,270,508 1,123,951