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Other Comprehensive Income (Loss) Other Comprehensive Income (Loss) (Notes)
 3 Months Ended
Mar. 31, 2014
Statement of Comprehensive Income [Abstract]  
Comprehensive Income (Loss) Note [Text Block]
Other Comprehensive Income (Loss)
 
Other comprehensive income (loss) components, net of tax, are shown in the following table for the three-month periods ended March 31, 2014 and 2013:
Three months ended March 31,
(in thousands)
 
Changes in pension plan assets and benefit obligations
 
Unrealized gains (losses) on available-for-sale securities
 
Total
Beginning balance at December 31, 2013
 
$
(5,598
)
 
$
(29,821
)
 
$
(35,419
)
 
Other comprehensive income before reclassifications
 
—

 
10,941

 
10,941

Net current period other comprehensive income
 
—

 
10,941

 
10,941

Ending balance at March 31, 2014
 
$
(5,598
)
 
$
(18,880
)
 
$
(24,478
)
 
 
 
 
 
 
 
 
Beginning balance at December 31, 2012
 
$
(27,134
)
 
$
9,616

 
$
(17,518
)
 
Other comprehensive loss before reclassifications
 
—

 
(2,379
)
 
(2,379
)
Net current period other comprehensive loss
 
—

 
(2,379
)
 
(2,379
)
Ending balance at March 31, 2013
 
$
(27,134
)
 
$
7,237

 
$
(19,897
)

During the three-month periods ended March 31, 2014 and March 31, 2013, there were no reclassifications out of accumulated other comprehensive income.