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Earnings Per Share (Tables)
 9 Months Ended
Sep. 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
September 30,
 
Nine Months Ended
September 30,
 
2017
 
2016
 
2017
 
2016
 
(in thousands, except share and per share amounts)
Net income to shareholders
$
10,351

 
$
21,366

 
$
43,342

 
$
48,799

 
 
 
 
 
 
 
 
Weighted average common shares outstanding:
 
 
 
 
 
 
 
Basic
29,524,243

 
29,101,550

 
29,407,762

 
29,030,284

Common share equivalents
695,834

 
833,602

 
877,971

 
804,402

Diluted
30,220,077

 
29,935,152

 
30,285,733

 
29,834,686

 
 
 
 
 
 
 
 
Earnings per share:
 
 
 
 
 
 
 
Basic
$
0.35

 
$
0.73

 
$
1.47

 
$
1.68

Common share equivalents
(0.01
)
 
(0.02
)
 
(0.04
)
 
(0.04
)
Diluted
$
0.34

 
$
0.71

 
$
1.43

 
$
1.64