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Accounts Payable
 12 Months Ended
Dec. 31, 2011
Accounts Payable and Accrued Expenses and Other Current Liabilities [Abstract]  
Accounts Payable

Note 8. Accounts Payable

Accounts payable at December 31 are summarized below:

 

                 
    2011     2010  

External services

   $ 716,904     $ 516,970  

Supplies

     206,863       301,355  

Other

     142,728       280,637  
   

 

 

    

 

 

  

Total accounts payable

   $ 1,066,495     $ 1,098,962