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Note 8 - Concentrations
12 Months Ended
Dec. 31, 2020
Notes to Financial Statements  
Concentration Risk Disclosure [Text Block]
Note
8:
     
Concentrations
 
Revenues from customers representing
5%
or more of total revenue for the years ended
December 31, 2020
and
2019,
respectively were:
 
   
Years Ended December 31,
 
Count
 
2020
   
2019
 
1   $
87,871
    $
102,265
 
2    
67,416
     
69,106
 
3    
47,452
     
51,683
 
4    
45,520
     
51,480
 
5    
40,289
     
43,954
 
6    
38,333
     
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