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Compensation Plans (Tables)
 12 Months Ended
Dec. 31, 2012
Compensation Plans [Abstract]  
Long-Term Incentive Compensation Plan Expense
The following table summarizes the LTIP expense for the three years ended December 31, 2012:
(In thousands)
2012
 
2011
 
2010
2006 grant
$
—

 
$
—

 
$
5,119

2008 grant
5,742

 
4,600

 
5,070

2011 grant
7,365

 
5,620

 
—

Total
$
13,107

 
$
10,220

 
$
10,189