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Note 3 - Accounts Receivable
12 Months Ended
Dec. 31, 2014
Receivables [Abstract]  
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

3.               ACCOUNTS RECEIVABLE


Accounts receivable consists of trade receivables as follows:


December 31,

 

2014

   

2013

 
                 

Billed receivables

  $ 6,491,814     $ 4,417,254  

Less: allowance for doubtful accounts

    (25,000 )     (25,000 )
    $ 6,466,814     $ 4,392,254