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Other Comprehensive Income (Loss) Other Comprehensive Income (Loss) Net of Tax (Tables)
 9 Months Ended
Sep. 30, 2013
Statement of Comprehensive Income [Abstract]  
Comprehensive Income (Loss) [Table Text Block]
Other comprehensive income (loss) components, net of tax, are shown in the following table for the three-month and nine-month periods ended September 30, 2013 and 2012:
Nine months ended September 30,
(in thousands)
 
Changes in pension plan assets and benefit obligations
 
Unrealized gains and losses on available for sale securities
 
Unrealized net holding loss on cash flow hedge
 
Total
Beginning balance at December 31, 2012
 
$
(27,134
)
 
$
9,616

 
$
—

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

 
(33,948
)
 
—

 
(33,948
)
 
Amounts reclassified from accumulated other comprehensive income
 
—

 
17

 
—

 
17

Net current period other comprehensive loss
 
—

 
(33,931
)
 
—

 
(33,931
)
Ending balance at September 30, 2013
 
$
(27,134
)
 
$
(24,315
)
 
$
—

 
$
(51,449
)
 
 
 
 
 
 
 
 
 
 
Beginning balance at December 31, 2011
 
$
(20,954
)
 
$
12,673

 
$
(550
)
 
$
(8,831
)
Net current period other comprehensive income
 
412

 
1,468

 
401

 
2,281

Ending balance at September 30, 2012
 
$
(20,542
)
 
$
14,141

 
$
(149
)
 
$
(6,550
)

Three months ended September 30,
(in thousands)
 
Changes in pension plan assets and benefit obligations
 
Unrealized gains and losses on available for sale securities
 
Unrealized net holding loss on cash flow hedge
 
Total
Beginning balance at June 30, 2013
 
$
(27,134
)
 
$
(13,300
)
 
$
—

 
$
(40,434
)
 
Other comprehensive loss before reclassifications
 
—

 
(11,032
)
 
—

 
(11,032
)
 
Amounts reclassified from accumulated other comprehensive income
 
—

 
17

 
—

 
17

Net current period other comprehensive loss
 
—

 
(11,015
)
 
—

 
(11,015
)
Ending balance at September 30, 2013
 
$
(27,134
)
 
$
(24,315
)
 
$
—

 
$
(51,449
)
 
 
 
 
 
 
 
 
 
 
Beginning balance at June 30, 2012
 
$
(20,542
)
 
$
13,277

 
$
(291
)
 
$
(7,556
)
Net current period other comprehensive income
 
—

 
864

 
142

 
1,006

Ending balance at September 30, 2012
 
$
(20,542
)
 
$
14,141

 
$
(149
)
 
$
(6,550
)