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Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Schedule of reconciliation of numerator and denominator of basic and diluted earnings per share
The following represents a reconciliation of the numerator and denominator of the basic and diluted earnings per share computations contained in the condensed consolidated financial statements:
 
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2017
 
2016
 
2017
 
2016
 
(in thousands, except share and per share amounts)
Net income to shareholders
$
14,541

 
$
14,596

 
$
32,991

 
$
27,433

 
 
 
 
 
 
 
 
Weighted average common shares outstanding:
 
 
 
 
 
 
 
Basic
29,406,877

 
29,035,512

 
29,348,557

 
28,994,260

Common share equivalents
900,222

 
790,402

 
969,028

 
789,823

Diluted
30,307,099

 
29,825,914

 
30,317,585

 
29,784,083

 
 
 
 
 
 
 
 
Earnings per share:
 
 
 
 
 
 
 
Basic
$
0.49

 
$
0.50

 
$
1.12

 
$
0.95

Common share equivalents
(0.01
)
 
(0.01
)
 
(0.03
)
 
(0.03
)
Diluted
$
0.48

 
$
0.49

 
$
1.09

 
$
0.92