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Note 17 - Interest Expense, Net
 12 Months Ended
Dec. 31, 2017
Notes to Financial Statements  
Interest Expense Disclosure [Text Block]
NOTE
 
17
 — INTEREST EXPENSE, NET
 
The components of interest expense are as follows:
 
   
Year Ended December 31,
  
   
2017
   
2016
   
2015
 
   
(Dollars in thousands)
  
Interest related to sale of tax benefits
   $
6,985
     $
9,349
     $
9,620
  
Interest expense
    
54,381
      
61,327
      
67,032
  
Less
— amount capitalized
    
(7,224
 )    
(3,287
 )    
(4,075
 )
    $
54,142
     $
67,389
     $
72,577