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4. SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
6 Months Ended
Jun. 30, 2012
Supplemental Cash Flow Information Related Text Supplemental cash flow information is as follows:
    (Unaudited)  
    Six Months Ended  
    June 30,  
    2012     2011  
             
Interest   $ 319,432     $ 486,546  
                 
Federal, state and local income taxes,                
net of refunds   $ 273,766     $ 1,105,055  
                 
Fixed asset purchases in accounts payable   $ 207,731     $ 527,853