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Note 7 - Concentrations (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]
     

Six Months Ended June 30,

 

Count

   

2022

   

2021

 
1     $ 63,096     $ 54,300  
2       56,089       49,324  
3       34,872       28,679  
4       34,003       26,644  
5       33,073       24,535