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EARNINGS PER SHARE (Tables)
 12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Schedule of the Components of Earnings Per Share Earnings per share consisted of the following components for the years ended December 31:
 
2018
 
2017
 
2016
 
(Dollars in thousands, except per share data)
Net income
$
121,622

 
$
87,204

 
$
76,648

 
 
 
 
 
 
Weighted Average Shares
 
Basic shares
27,592,380

 
27,294,028

 
26,404,071

Effect of dilutive securities
61,428

 
78,076

 
51,847

Diluted shares
27,653,808

 
27,372,104

 
26,455,918

 
 
 
 
 
 
Net income per share
 
 
 
 
 
Basic EPS
$
4.41

 
$
3.19

 
$
2.90

Effect of dilutive securities
(0.01
)
 
—

 
—

Diluted EPS
$
4.40

 
$
3.19

 
$
2.90