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Note 13 - Segment Information, Geographic Data and Major Customers (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]

(In Thousands)

  Three Months Ended  
      March 31, 2022       March 31, 2021  

Revenues:

               

Vessel revenues:

               

Americas

  $ 28,444     $ 26,224  

Middle East/Asia Pacific

    25,115       24,414  

Europe/Mediterranean

    23,919       14,749  

West Africa

    26,398       15,606  

Other operating revenues

    1,853       2,511  

Total

  $ 105,729     $ 83,504  

Vessel operating profit (loss):

               

Americas

  $ (82 )   $ (1,651 )

Middle East/Asia Pacific

    290       (1,853 )

Europe/Mediterranean

    (2,429 )     (8,021 )

West Africa

    3,215       (6,767 )

Other operating profit

    1,492       1,444  
      2,486       (16,848 )
                 

Corporate expenses

    (10,503 )     (7,505 )

Long-lived asset impairment credit

    500        

Gain (loss) on asset dispositions, net

    207       (1,948 )

Operating loss

  $ (7,310 )   $ (26,301 )

Depreciation and amortization:

               

Americas

  $ 7,116     $ 8,007  

Middle East/Asia Pacific

    6,255       6,880  

Europe/Mediterranean

    6,762       7,484  

West Africa

    5,741       6,570  

Corporate

    783       786  

Total

  $ 26,657     $ 29,727  

Additions to properties and equipment:

               

Middle East/Asia Pacific

  $ 24     $ 8  

Europe/Mediterranean

    276       306  

West Africa

    350       495  

Corporate

    579       387  

Total

  $ 1,229     $ 1,196  

(In Thousands)

               
   

March 31, 2022

   

December 31, 2021

 

Total assets:

               

Americas

  $ 282,522     $ 278,394  

Middle East/Asia Pacific

    203,750       183,287  

Europe/Mediterranean

    275,036       293,760  

West Africa

    188,054       223,988  

Corporate

    104,768       116,351  
    $ 1,054,130     $ 1,095,780