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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2019
Earnings Per Share [Abstract]  
Computation Of Basic And Diluted Earnings Per Common Share
The computation of basic and diluted earnings per common share is as follows:    
 
 
Three Months Ended
 
 
March 31,
(In thousands, except per share amounts)
 
2019
 
2018
Computation of Basic Earnings Per Share:
 
 
 
 
Numerator:
 
 
 
 
Net income
 
$
30,081

 
$
25,086

Income allocated to participating securities
 
(179
)
 
(155
)
Net income available to common shareholders
 
$
29,902

 
$
24,931

Denominator:
 
 
 
 
Weighted average common shares outstanding – basic
 
55,347

 
56,464

Basic earnings per share
 
$
0.54

 
$
0.44

 
 
 
 
 
Computation of Diluted Earnings Per Share:
 
 
 
 
Numerator:
 
 
 
 
Net income
 
$
30,081

 
$
25,086

Income allocated to participating securities
 
(179
)
 
(154
)
Net income available to common shareholders
 
$
29,902

 
$
24,932

Denominator:
 
 
 
 
Weighted average common shares outstanding – basic
 
55,347

 
56,464

Diluted effect of stock options and PVRSUs
 
310

 
647

Weighted average common shares outstanding – diluted
 
55,657

 
57,111

Diluted earnings per share
 
$
0.54

 
$
0.44