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Note 6 - Other Income and Loss (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Other Nonoperating Income (Expense) [Table Text Block]
  

Year Ended December 31,

 
  

2022

  

2021

 

Interest income

 $394  $34 

Other income (loss)

  14   1,616 

Total other income (loss)

 $408  $1,650