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Per Share Data (Tables)
9 Months Ended
Sep. 30, 2018
Earnings Per Share [Abstract]  
Weighted average number of common shares
The weighted average number of common shares used in the computation of basic and diluted earnings per share was as follows:
 
For the Three Months
Ended September 30,
 
For the Nine Months
Ended September 30,
 
 
(In thousands)
2018
 
2017
 
2018
 
2017
Basic
126,827

 
125,818

 
126,575

 
124,363

Diluted
128,561

 
128,944

 
128,404

 
129,289