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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
Schedule of Weighted-Average Number of Shares Outstanding
The following is a calculation of the basic and diluted weighted average shares outstanding for the periods presented:

 
Year Ended December 31,
 
2014
 
2013
 
2012
 
(In thousands)
Basic weighted average common shares outstanding
99,677

 
92,867

 
92,180

Dilution effect of stock awards at end of period
688

 
544

 
333

Diluted weighted average common shares outstanding
100,365

 
93,411

 
92,513

Anti-dilutive stock-based compensation awards
980

 
634

 
465