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Note 5 - Valuation Accounts
 12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Allowance for Credit Losses [Text Block]
Note
5.
Valuation Accounts
 
Valuation and allowance accounts included the following at
December
31:
 
    Balance
Beginning of
Year		   Net Charged to
Costs and
Expenses		   Transfers   Net Write-Off   Balance End of
Year
2016                                        
Allowance for doubtful accounts   $
35,033
     $
-
     $
-
     $
(8,477
 )   $
26,556
  
Reserve for processing losses    
248,868
      
-
      
-
      
(76,036
 )    
172,832
  
                                         
2015                                        
Allowance for doubtful accounts   $
45,663
     $
-
     $
-
     $
(10,630
 )   $
35,033
  
Reserve for processing losses    
272,365
      
-
      
-
      
(23,497
 )    
248,868