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4. SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
3 Months Ended
Mar. 31, 2015
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information Related Text Supplemental cash flow information is as follows:

    (Unaudited)  
    Three Months Ended  
    March 31,  
    2015     2014  
             
Interest   $ 155,196     $ 193,354  
                 
Federal, state and local income taxes,                
net of refunds   $ 3,500,971     $ 906,060  
                 
Fixed asset purchases in accounts payable   $ 147,296     $ 659,722