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Level 3 Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2013
Stockholders' Equity Note [Abstract]  
Changes in Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Changes in accumulated other comprehensive loss are as follows:

 
 
Changes in Accumulated Other Comprehensive Loss
 
 
Year Ended December 31
 
 
2013
 
2012
 
2011
 
 
(thousands)
Beginning Balance, net of taxes
 
$
(121,229
)
 
$
(120,845
)
 
$
(40,195
)
Net actuarial gain (loss), current-period changes, before taxes
 
97,171

 
(8,432
)
 
(83,528
)
Amortization of actuarial loss, amounts reclassified from accumulated other comprehensive loss, before taxes (a)
 
9,202

 
7,632

 
2,703

Amortization of prior service costs and other, amounts reclassified from accumulated other comprehensive loss, before taxes (a)
 
304

 
416

 
175

Income taxes
 
(40,697
)
 
—

 
—

Ending Balance, net of taxes
 
$
(55,249
)
 
$
(121,229
)
 
$
(120,845
)

___________________________________ 
 
(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 9, Retirement and Benefit Plans.