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Note 13 - Discontinued Operations (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Disposal Groups, Including Discontinued Operations [Table Text Block]
   
Three Months Ended
   
Six Months Ended
 
   
June 30,
   
June 30,
 
   
(unaudited)
   
(unaudited)
 
   
2020
   
2019
   
2020
   
2019
 
   
(in thousands)
   
(in thousands)
 
Operating revenues
  $
577
    $
821
    $
1,317
    $
1,488
 
Operating costs and expenses
   
(719
)    
(686
)    
(1,376
)    
(1,294
)
Deprectiation expense
   
-
     
(71
)    
-
     
(142
)
Income (loss) from discontinued operations
  $
(142
)   $
64
    $
(59
)   $
52