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EARNINGS PER SHARE (Tables)
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Schedule of information used to compute basic and diluted earnings per share
The following table presents the information used to compute basic and diluted earnings per common share for the periods indicated:
 
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
(dollars in thousands, except per share data)
2017
 
2016
 
2017
 
2016
Net income
$
11,812

 
$
11,466

 
$
36,916

 
$
34,784

 
 
 
 
 
 
 
 
Weighted average shares outstanding - basic
30,300,195

 
30,943,756

 
30,526,260

 
31,088,729

Dilutive effect of employee stock options and awards
214,264

 
198,372

 
232,729

 
188,673

Weighted average shares outstanding - diluted
30,514,459

 
31,142,128

 
30,758,989

 
31,277,402

 
 
 
 
 
 
 
 
Basic earnings per common share
$
0.39

 
$
0.37

 
$
1.21

 
$
1.12

Diluted earnings per common share
$
0.39

 
$
0.37

 
$
1.20

 
$
1.11