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Other Comprehensive Income (Loss) Net of Tax (Tables)
 6 Months Ended
Jun. 30, 2019
Statement of Comprehensive Income [Abstract]  
Comprehensive Income (Loss) [Table Text Block]

Other comprehensive income (loss) components, net of income tax, are shown in the following table for the three-month and six-month periods ended June 30, 2019 and 2018:


(in thousands)
 
Changes in pension plan assets and benefit obligations
 
Unrealized net holding loss on cash flow hedge
 
Unrealized gains and losses on AFS debt securities
 
Total
Beginning balance at April 1, 2019
 
$
(29,672
)
 
$
(206
)
 
$
(5,575
)
 
$
(35,453
)
 
Other comprehensive (loss) income before reclassifications
 
—

 
(301
)
 
8,967

 
8,666

 
Amounts reclassified from accumulated other comprehensive loss
 
—

 
—

 
480

 
480

Net current period other comprehensive (loss) income
 
—

 
(301
)
 
9,447

 
9,146

Ending balance at June 30, 2019
 
$
(29,672
)
 
$
(507
)
 
$
3,872

 
$
(26,307
)
 
 
 
 
 
 
 
 
 
 
Beginning balance at April 1, 2018
 
$
(26,701
)
 
$
—

 
$
(25,940
)
 
$
(52,641
)
 
Other comprehensive loss before reclassifications
 
—

 
—

 
(2,368
)
 
(2,368
)
Net current period other comprehensive loss
 
—

 
—

 
(2,368
)
 
(2,368
)
Ending balance at June 30, 2018
 
$
(26,701
)
 
$
—

 
$
(28,308
)
 
$
(55,009
)


(in thousands)
 
Changes in pension plan assets and benefit obligations
 
Unrealized net holding loss on cash flow hedge
 
Unrealized gains and losses on AFS debt securities
 
Total
Beginning balance at January 1, 2019
 
$
(29,672
)
 
$
—

 
$
(20,116
)
 
$
(49,788
)
 
Other comprehensive (loss) income before reclassifications
 
—

 
(507
)
 
23,508

 
23,001

 
Amounts reclassified from accumulated other comprehensive loss
 
—

 
—

 
480

 
480

Net current period other comprehensive (loss) income
 
—

 
(507
)
 
23,988

 
23,481

Ending balance at June 30, 2019
 
$
(29,672
)
 
$
(507
)
 
$
3,872

 
$
(26,307
)
 
 
 
 
 
 
 
 
 
 
Beginning balance at January 1, 2018, as previously presented
 
$
(23,526
)
 
$
—

 
$
(2,928
)
 
$
(26,454
)
 
Cumulative effect of change in accounting principle for marketable equity securities, net of tax
 
—

 
—

 
(995
)
 
(995
)
Beginning balance at January 1, 2018, as adjusted
 
(23,526
)
 
—

 
(3,923
)
 
(27,449
)
 
Reclassification of disproportionate income tax effects
 
(3,175
)
 
—

 
(631
)
 
(3,806
)
Net current period activity
 
 
 
 
 
 
 
 
 
Other comprehensive loss before reclassifications
 
—

 
—

 
(25,778
)
 
(25,778
)
 
Amounts reclassified from accumulated other comprehensive loss
 
—

 
—

 
2,024

 
2,024

Net current period other comprehensive loss
 
—

 
—

 
(23,754
)
 
(23,754
)
Ending balance at June 30, 2018
 
$
(26,701
)
 
$
—

 
$
(28,308
)
 
$
(55,009
)