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Note 3 - Accounts Receivable
 3 Months Ended
Mar. 31, 2017
Notes to Financial Statements  
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
3.
ACCOUNTS RECEIVABLE
 
Accounts receivable are carried at original amount less an estimate made for doubtful receivables based on a review of all outstanding amounts on a monthly basis. Management determines the allowance for doubtful receivables by regularly evaluating individual customer receivables and considering a customer’s financial condition, credit history, and current economic conditions. Accounts receivable are written off when deemed uncollectible. During the year ended
December
31,
2016,
the Company reclassified a past due receivable to non-current as management concluded that collection
may
not occur in the near term. As a result of the payment delays the Company had reserved
$500,000
at
December
31,
2016
and in the current quarter the Company reserved an additional
$500,000.
The total reserve represents
48%
of the remaining balance owed at
March
31,
2017.
Recoveries of accounts receivable previously written off are recorded when received. Accounts receivable at
March
31,
2017
and
December
31,
2016
consisted of the following:
 
 
 
March 31,
 
 
December 31,
 
   
2017
    
2016
  
Accounts receivable - current
   $
576,256
     $
1,577,031
  
Accounts receivable - non current
    
2,070,000
      
2,070,000
  
     
2,646,256
      
3,647,031
  
Allowance for doubtful accounts - current
    
(13,785
)
    
(13,785
)
Allowance for doubtful accounts - non current
    
(1,000,000
)
    
(500,000
 )
Accounts receivable, net of allowances for doubtful accounts
   $
1,632,471
     $
3,133,246