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Note 12 - Discontinued Operations (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Disposal Groups, Including Discontinued Operations [Table Text Block]
   

2021

 
   

(in thousands)

 
         

Operating revenues

  $ 819  

Operating costs and expenses

    (995

)

Impairment loss

    (40

)

Loss from discontinued operations

  $ (216

)