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Shareholders' Equity Total compensation cost related to nonvested awards (Details) (USD $)
9 Months Ended
Sep. 30, 2012
Y
Jun. 30, 2012
Restricted Stock [Member]
   
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Unrecognized compensation cost   $ 130,600
Excepted weighted-average period in years of compensation cost to be recognized 0.14  
Warrants [Member]
   
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Unrecognized compensation cost   94,900
Excepted weighted-average period in years of compensation cost to be recognized 0.39  
Stock Option [Member]
   
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Unrecognized compensation cost   $ 2,179,900
Excepted weighted-average period in years of compensation cost to be recognized 1.84