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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2017
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Earnings Per Common Share

The following table sets forth the computation of basic and diluted earnings per common share:

 

 

Year Ended December 31,

 

 

2017

 

 

2016

 

 

2015

 

 

(In thousands, except per share amounts)

 

Net income

$

148,089

 

 

$

126,172

 

 

$

96,037

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic weighted average shares outstanding

 

36,864

 

 

 

36,844

 

 

 

36,690

 

Dilutive effect of stock options and restricted stock

 

1,174

 

 

 

894

 

 

 

947

 

Diluted weighted average shares outstanding

 

38,038

 

 

 

37,738

 

 

 

37,637

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic earnings per share

$

4.02

 

 

$

3.42

 

 

$

2.62

 

 

 

 

 

 

 

 

 

 

 

 

 

Diluted earnings per share

$

3.89

 

 

$

3.34

 

 

$

2.55