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Earnings per share ("EPS") (Tables)
 12 Months Ended
Dec. 31, 2021
Earnings per share ("EPS") [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)
  
2021
    
2020
    
2019
  
Profit/(loss) for the period used for calculation of EPS - basic
  
$
(11,521
)
  
$
266,266
    
$
73,679
  
Interest and amortization on the convertible notes
  
$
-
    
$
6,766
    
$
12,177
  
Profit/(loss) for the period used for calculation of EPS - dilutive
  
$
(11,521
)
  
$
273,032
    
$
85,856
  
                         
Basic earnings per share:
                        
Weighted average shares outstanding - basic
    
169,089,325
      
155,712,886
      
143,437,164
  
                         
Diluted earnings per share:
                        
Weighted average shares outstanding - basic
    
169,089,325
      
155,712,886
      
143,437,164
  
Dilutive equity awards *
    
-
      
65,873
      
133,342
  
Dilutive shares related to convertible notes
    
-
      
14,275,217
      
24,589,370
  
Weighted average shares outstanding - dilutive
    
169,089,325
      
170,053,975
      
168,159,876
  


*In 2021, 77,546 equity awards were not included in the calculation of the dilutive weighted average shares outstanding due to being anti-dilutive