Quarterly report pursuant to sections 13 or 15(d)

6. Accounts Payable and Accrued Expenses

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6. Accounts Payable and Accrued Expenses
6 Months Ended
Jun. 30, 2012
Notes to Financial Statements  
6. Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses consist of the following at June 30, 2012 and December 31, 2011:

 

   

June 30,

2012

   

December 31,

2011

 
    (unaudited)        
                 
Trade accounts payable   $ 7,536,975     $ 8,061,024  
Accrued expenses     471,899       468,214  
Accrued payroll and vacation     95,425       110,829  
Cost accrual     203,039       2,815  
Interest payable     463,842       376,506  
Deferred revenue     19,357       10,044  
Other     373,494       419,549  
    $ 9,164,031     $ 9,448,981