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Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Earnings per share on a basic and diluted basis
Earnings per share on a basic and diluted basis has been adjusted to give retroactive recognition to stock dividends and is calculated as follows (in thousands, except per share amounts):
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2017
 
2016
 
2017
 
2016
Basic and Diluted Earnings:
 
 
 
 
 
 
 
Net income
$
14,481

 
$
11,395

 
$
29,470

 
$
24,911

Basic weighted-average shares outstanding
29,318

 
26,890

 
29,303

 
27,002

Add:   Stock awards
201

 
123

 
208

 
97

Diluted weighted-average shares outstanding
29,519

 
27,013

 
29,511

 
27,099

 
 

 
 

 
 

 
 

Basic Earnings Per Share:
 
 
 
 
 
 
 
Net Income
$
0.49

 
$
0.42

 
$
1.01

 
$
0.92

Diluted Earnings Per Share:
 
 
 
 
 
 
 
Net Income
$
0.49

 
$
0.42

 
$
1.00

 
$
0.92