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Note 3 - Accounts Receivable
9 Months Ended
Sep. 30, 2018
Notes to Financial Statements  
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
 
3.
  ACCOUNTS RECEIVABLE
 
 
The Company establishes an allowance for doubtful accounts based upon factors surrounding the credit risk of specific customers, historical trends and other information. The reserve for doubtful accounts was
$8,852
and
$10,175
at
September 30, 2018
and
December 31, 2017,
respectively.