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Note 3 - Restructuring of Operations (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]
  

Employee Termination Benefits

  

Exit Costs

  

Total

 

Balance, December 31, 2022

 $2  $  $2 

Charges to restructuring

     1   1 

Cash payments

     (1)  (1)

Balance, March 31, 2023

 $2  $  $2