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Earnings per share ("EPS") (Tables)
 12 Months Ended
Dec. 31, 2018
Earnings per share ("EPS") (Tables) [Abstract]  
Calculation of basic and diluted Earnings Per Share
The components of the calculation of basic EPS and diluted EPS are as follows:

(Dollars in thousands)
  
2018
    
2017
    
2016
  
Profit/loss for the period used for calculation of EPS - basic
  
$
(46,927
)
  
$
6,602
    
$
9,260
  
Profit/loss for the period used for calculation of EPS - dilutive
  
$
(46,927
)
  
$
6,602
    
$
9,260
  
                         
Basic earnings per share:
                        
Weighted average shares outstanding - basic
    
143,429,610
      
124,536,338
      
93,382,757
  
                         
Diluted earnings per share:
                        
Weighted average shares outstanding - basic
    
143,929,610
      
124,536,338
      
93,382,757
  
Dilutive equity awards
    
5,311
      
-
      
6,853
  
Weighted average shares outstanding - dilutive
    
143,434,921
      
124,536,338
      
93,389,610