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Note 5 - Sales Concentrations
6 Months Ended
Jun. 30, 2019
Notes to Financial Statements  
Concentration Risk Disclosure [Text Block]
(
5
) SALES CONCENTRATIONS:
 
Sales to
four
major customers accounted for
65%
of total sales for the
six
months ended
June 30, 2019.
Sales to
five
major customers accounted for
81%
of total sales for the
six
months ended
June 30, 2018. 
A loss of
one
of these customers could have a significant adverse effect on the Company’s financial condition, results of operations and cash flows.