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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2015
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 three months ended March 31, 2015 and 2014: 
 
Three Months Ended March 31,
 
2015
 
2014
 
(In thousands)
Basic weighted average common shares outstanding
109,303

 
99,560

Dilution effect of stock awards at end of period(1)

 
489

Diluted weighted average common shares outstanding
109,303

 
100,049

Anti-dilutive stock-based compensation awards
3,046

 
1,047