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Note 9 - Debt (Tables)
3 Months Ended
Mar. 31, 2021
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
  

March 31,

  

December 31,

 

(In thousands)

 

2021

  

2020

 

Secured notes:

        

8.00% Senior secured notes due August 2022 (A) (B) (C)

 $135,210  $147,049 

Troms Offshore borrowings (D):

        
NOK denominated notes due May 2024  5,981   5,954 

NOK denominated notes due January 2026

  7,339   14,559 

USD denominated notes due January 2027

  7,513   14,744 

USD denominated notes due April 2027

  15,669   15,669 
  $171,712  $197,975 

Debt premiums and discounts, net

  (5,174)  (5,244)

Less: Current portion of long-term debt

  (18,201)  (27,797)

Total long-term debt

 $148,337  $164,934