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Note 11 - Income Taxes (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
  

Three Months Ended March 31,

 
  

2022

  

2021

 

Income tax expense

 $21  $15 

Effective income tax rate

  25%  28%