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Note 13 - Discontinued Operations (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Disposal Groups, Including Discontinued Operations [Table Text Block]
   
Three Months Ended
   
Nine Months Ended
 
   
September 30,
   
September 30,
 
   
(unaudited)
   
(unaudited)
 
   
2020
   
2019
   
2020
   
2019
 
   
(in thousands)
   
(in thousands)
 
Operating revenues
  $
697
    $
951
    $
2,014
    $
2,439
 
Operating costs and expenses
   
(722
)    
(745
)    
(2,098
)    
(2,039
)
Deprectiation expense
   
-
     
(72
)    
-
     
(213
)
Income (loss) from discontinued operations
  $
(25
)   $
134
    $
(84
)   $
187