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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Earnings Per Share
The following table sets forth the computation of basic and diluted earnings per share:
 
Years Ended December 31,
(Dollars and shares in thousands, except per share amounts)
2019
 
2018
 
2017
Numerator:
 
 
 
 
 
Net income
$
47,319

 
$
87,651

 
$
80,459

Denominator:
 
 
 
 
 
Weighted average shares outstanding - basic
18,573

 
18,374

 
18,154

Effect of dilutive shares
140

 
285

 
393

Weighted average shares outstanding - diluted
18,713

 
18,659

 
18,547

Basic earnings per share
$
2.55

 
$
4.77

 
$
4.43

Diluted earnings per share
$
2.53

 
$
4.70

 
$
4.34