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Accumulated Other Comprehensive Loss
 12 Months Ended
Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Loss
ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME

Accumulated other comprehensive loss included the following at December 31, 2019 and 2018:
 
December 31, 2019
 
December 31, 2018
(Dollars in thousands)
Accumulated
other
comprehensive income
 (loss)
 
Deferred
tax expense
(benefit)
 
Accumulated
other
comprehensive
loss,
net of tax
 
Accumulated
other
comprehensive income
(loss)
 
Deferred
tax expense
(benefit)
 
Accumulated
other
comprehensive
loss,
net of tax
Unrealized gains (losses) on securities available for sale
$
7,522

 
$
1,730

 
$
5,792

 
$
(50,007
)
 
$
(11,502
)
 
$
(38,505
)
Unrealized losses on securities available for sale transferred from (to) held to maturity
—

 
—

 
—

 
(92,401
)
 
(21,252
)
 
(71,149
)
Defined benefit pension items
(172,098
)
 
(39,583
)
 
(132,515
)
 
(163,030
)
 
(37,497
)
 
(125,533
)
Total
$
(164,576
)
 
$
(37,853
)
 
$
(126,723
)
 
$
(305,438
)
 
$
(70,251
)
 
$
(235,187
)

The following table highlights changes in accumulated other comprehensive (loss) income by component for the years ended December 31, 2019 and 2018:
(Dollars in thousands)
Unrealized gains (losses) on securities available-for-sale(1)
 
Unrealized losses on securities available for sale transferred from (to) held to maturity(1)(2)
 
Defined benefit pension items(1)
 
Total
Balance at January 1, 2018
$
(30,945
)
 
$
—

 
$
(91,349
)
 
$
(122,294
)
Cumulative effect adjustments(3)
(29,751
)
 
—

 
(20,300
)
 
(50,051
)
Adjusted beginning balance
(60,696
)
 
—

 
(111,649
)
 
(172,345
)
Net unrealized gains (losses) arising during period
22,461

 
(84,321
)
 
(24,649
)
 
(86,509
)
Amounts reclassified from accumulated other comprehensive loss
(270
)
 
13,172

 
10,765

 
23,667

Net current period other comprehensive income (loss)
22,191

 
(71,149
)
 
(13,884
)
 
(62,842
)
Balance at December 31, 2018
(38,505
)
 
(71,149
)
 
(125,533
)
 
(235,187
)
Net unrealized gains (losses) arising during period
49,776

 
55,834

 
(15,438
)
 
90,172

Amounts reclassified from accumulated other comprehensive loss
(5,479
)
 
15,315

 
8,456

 
18,292

Net current period other comprehensive income (loss)
44,297

 
71,149

 
(6,982
)
 
108,464

Balance at December 31, 2019
$
5,792

 
$
—

 
$
(132,515
)
 
$
(126,723
)
(1) All amounts are net of tax. Amounts in parentheses indicate debits.
(2) Net unrealized gains (losses) represent unrealized gains and losses related to the reclassification of investment securities between categories. See Note C, Investments, for additional information.
(3) Cumulative adjustments for adoption of ASU 2018-02 of $31.3 million and ASU 2016-01 of $18.7 million.
The following table presents the amounts reclassified from accumulated other comprehensive (loss) income and the line item affected in the statement where net income is presented for years ended December 31, 2019 and 2018:
(Dollars in thousands)
 
Year ended December 31, 2019
Details about accumulated other comprehensive (loss) income
 
Amount reclassified from accumulated other comprehensive (loss) income(1)
 
Affected line item in the statement where net income is presented
Unrealized gains on available for sale securities
 
$
7,115

 
Realized gains on investment securities available for sale, net
 
 
(1,636
)
 
Income taxes
 
 
$
5,479

 
 
 
 
 
 
 
Amortization of unrealized losses on securities available for sale transferred to held to maturity
 
$
(19,889
)
 
Net interest income
 
 
4,574

 
Income taxes
 
 
$
(15,315
)
 
 
 
 
 
 
 
Amortization of defined benefit pension items
 
 
 
 
Prior service costs
 
$
(57
)
 
Salaries and wages
Actuarial losses
 
(10,924
)
 
Other
 
 
(10,981
)
 
Income before income taxes
 
 
2,525

 
Income taxes
 
 
$
(8,456
)
 
 
Total reclassifications for the period
 
$
(18,292
)
 
 
 
 
 
 
 
 
 
Year ended December 31, 2018
Details about accumulated other comprehensive (loss) income
 
Amount reclassified from accumulated other comprehensive (loss) income(1)
 
Affected line item in the statement where net income is presented
Unrealized gains on available for sale securities
 
$
351

 
Realized gains on investment securities available for sale, net
 
 
(81
)
 
Income taxes
 
 
$
270

 
 
 
 
 
 
 
Amortization of unrealized losses on securities available for sale transferred to held to maturity
 
$
(17,106
)
 
Net interest income
 
 
3,934

 
Income taxes
 
 
$
(13,172
)
 
 
 
 
 
 
 
Amortization of defined benefit pension items
 
 
 
 
Prior service costs
 
$
(79
)
 
Salaries and wages
Actuarial losses
 
(13,902
)
 
Other
 
 
(13,981
)
 
Income before income taxes
 
 
3,216

 
Income taxes
 
 
$
(10,765
)
 
 
Total reclassifications for the period
 
$
(23,667
)
 
 
(1) Amounts in parentheses indicate debits to profit/loss.