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Other Comprehensive Income (Loss) Other Comprehensive Income (Loss) Net of Tax (Tables)
 9 Months Ended
Sep. 30, 2017
Statement of Comprehensive Income [Abstract]  
Comprehensive Income (Loss) [Table Text Block]
Other comprehensive income components, net of tax, are shown in the following table for the three-month and nine-month periods ended September 30, 2017 and 2016:

(in thousands)
 
Changes in pension plan assets and benefit obligations
 
Unrealized gains (losses) on available for sale securities
 
Total
Beginning balance at July 1, 2017
 
$
(14,740
)
 
$
1,028

 
$
(13,712
)
 
Other comprehensive income before reclassifications
 
—

 
707

 
707

 
Amounts reclassified from accumulated other comprehensive loss
 
—

 
—

 
—

Net current period other comprehensive income
 
—

 
707

 
707

Ending balance at September 30, 2017
 
$
(14,740
)
 
$
1,735

 
$
(13,005
)
 
 
 
 
 
 
 
 
Beginning balance at July 1, 2016
 
$
(15,351
)
 
$
15,740

 
$
389

 
Other comprehensive loss before reclassifications
 
—

 
(2,182
)
 
(2,182
)
 
Amounts reclassified from accumulated other comprehensive loss
 
—

 
—

 
—

Net current period other comprehensive loss
 
—

 
(2,182
)
 
(2,182
)
Ending balance at September 30, 2016
 
$
(15,351
)
 
$
13,558

 
$
(1,793
)



(in thousands)
 
Changes in pension plan assets and benefit obligations
 
Unrealized gains (losses) on available for sale securities
 
Total
Beginning balance at January 1, 2017
 
$
(14,740
)
 
$
(3,005
)
 
$
(17,745
)
 
Other comprehensive income before reclassifications
 
—

 
4,740

 
4,740

 
Amounts reclassified from accumulated other comprehensive loss
 
—

 
—

 
—

Net current period other comprehensive income
 
—

 
4,740

 
4,740

Ending balance at September 30, 2017
 
$
(14,740
)
 
$
1,735

 
$
(13,005
)
 
 
 
 
 
 
 
 
Beginning balance at January 1, 2016
 
$
(15,351
)
 
$
(292
)
 
$
(15,643
)
 
Other comprehensive income before reclassifications
 
—

 
13,850

 
13,850

 
Amounts reclassified from accumulated other comprehensive loss
 
—

 
—

 
—

Net current period other comprehensive income
 
—

 
13,850

 
13,850

Ending balance at September 30, 2016
 
$
(15,351
)
 
$
13,558

 
$
(1,793
)