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Note 5 - Valuation Accounts
12 Months Ended
Dec. 31, 2015
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
201
5
                                       
Allowance for doubtful accounts   $ 45,663     $ -     $ -     $ (10,630 )   $ 35,033  
Reserve for processing losses     272,365       -       -       (23,497 )     248,868  
 
2014                                        
Allowance for doubtful accounts   $ 49,782     $ -     $ -     $ (4,119 )   $ 45,663  
Reserve for processing losses     297,365       -       (25,000 )     -       272,365