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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2017
Earnings Per Share [Abstract]  
Schedule of Basic And Diluted Earnings Per Share
The computation of basic and diluted earnings per share is shown below (in thousands, except per share amounts).
 
 
Three Months Ended
March 31,
 
2017
 
2016
Net income
$
16,019

 
$
20,092

Weighted average common shares outstanding
72,191

 
72,025

Dilutive effect of stock-based awards
256

 
328

Shares used in computing diluted earnings per share
72,447

 
72,353

Basic earnings per share
$
0.22

 
$
0.28

Diluted earnings per share
$
0.22

 
$
0.28