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Stockholders' Equity Level 3 Stockholders' Equity (Tables)
 3 Months Ended
Mar. 31, 2013
Stockholders' Equity Note [Abstract]  
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
The following tables detail the changes in accumulated other comprehensive loss for the three months ended March 31, 2013 and 2012, respectively:

 
 
Accumulated Other Comprehensive Loss
 
 
(thousands)
Balance at December 31, 2012, net of tax
 
$
(121,229
)
 
Defined benefit pension plans, amounts reclassified from accumulated other comprehensive loss, net of tax of $870
 
1,409

(a)
Balance at March 31, 2013, net of tax
 
$
(119,820
)
 

 
 
Accumulated Other Comprehensive Loss
 
 
(thousands)
Balance at December 31, 2011, net of tax
 
$
(120,845
)
 
Defined benefit pension plans, amounts reclassified from accumulated other comprehensive loss, net of tax of $0
 
2,067

(a)
Balance at March 31, 2012, net of tax
 
$
(118,778
)
 
___________________________________ 
 
(a)
Represents amounts reclassified from accumulated other comprehensive loss. These amounts are included in the computation of net periodic pension cost. For additional information, see Note 6, Retirement and Benefit Plans.