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Equity (Tables)
6 Months Ended
Jun. 30, 2015
Equity [Abstract]  
Treasury Stock
The following table shows the number of shares withheld for taxes and the associated value of those shares for the six-month periods ended June 30, 2015 and 2014. These shares were accounted for as treasury stock when withheld and then immediately retired.
 
Six Months Ended June 30,
 
2015
 
2014
 
(In thousands)
Number of shares withheld for taxes
1,279

 
637

Value of shares withheld for taxes
$
2,093

 
$
3,865