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Accumulated Other Comprehensive Income (Loss)
 9 Months Ended
Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Loss ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

Accumulated other comprehensive income (loss) included the following as of September 30, 2019 and December 31, 2018:
 
September 30, 2019
 
December 31, 2018
(Dollars in thousands)
Accumulated
other
comprehensive
income (loss)
 
Deferred
tax
expense
(benefit)
 
Accumulated
other
comprehensive
income (loss),
net of tax
 
Accumulated
other
comprehensive
income (loss)
 
Deferred
tax
expense
(benefit)
 
Accumulated
other
comprehensive
income (loss),
net of tax
Unrealized gains (losses) on securities available for sale
$
6,112

 
$
1,406

 
$
4,706

 
$
(50,007
)
 
$
(11,502
)
 
$
(38,505
)
Unrealized losses on securities available for sale transferred to held to maturity
(74,397
)
 
(17,111
)
 
(57,286
)
 
(92,401
)
 
(21,252
)
 
(71,149
)
Defined benefit pension items
(154,795
)
 
(35,603
)
 
(119,192
)
 
(163,030
)
 
(37,497
)
 
(125,533
)
Total
$
(223,080
)
 
$
(51,308
)
 
$
(171,772
)
 
$
(305,438
)
 
$
(70,251
)
 
$
(235,187
)
The following table highlights changes in accumulated other comprehensive income (loss) by component for the three and nine months ended September 30, 2019 and September 30, 2018:
 
Three months ended September 30, 2019
(Dollars in thousands)
Unrealized gains (losses) on securities available for sale(1)
 
Unrealized losses on securities available for sale transferred to held to maturity(1)
 
Defined benefit pension items(1)
 
Total
Beginning balance
$
2,554

 
$
(61,979
)
 
$
(121,306
)
 
$
(180,731
)
Net unrealized gains arising during period
3,026

 
—

 
—

 
3,026

Amounts reclassified from accumulated other comprehensive loss
(874
)
 
4,693

 
2,114

 
5,933

Net current period other comprehensive income
2,152

 
4,693

 
2,114

 
8,959

Ending balance
$
4,706

 
$
(57,286
)
 
$
(119,192
)
 
$
(171,772
)
 
 
 
 
 
 
 
 
 
Three months ended September 30, 2018
(Dollars in thousands)
Unrealized gains (losses) on securities available for sale(1)
 
Unrealized losses on securities available for sale transferred to held to maturity(1)
 
Defined benefit pension items(1)
 
Total
Beginning balance
$
(57,496
)
 
$
(80,876
)
 
$
(106,266
)
 
$
(244,638
)
Net unrealized losses arising during period
(10,635
)
 
—

 
—

 
(10,635
)
Amounts reclassified from accumulated other comprehensive loss
—

 
5,007

 
2,691

 
7,698

Net current period other comprehensive (loss) income
(10,635
)
 
5,007

 
2,691

 
(2,937
)
Ending balance
$
(68,131
)
 
$
(75,869
)
 
$
(103,575
)
 
$
(247,575
)
 
 
 
 
 
 
 
 
 
Nine months ended September 30, 2019
(Dollars in thousands)
Unrealized gains (losses) on securities available for sale(1)
 
Unrealized losses on securities available for sale transferred to held to maturity(1)
 
Defined benefit pension items(1)
 
Total
Beginning balance
$
(38,505
)
 
$
(71,149
)
 
$
(125,533
)
 
$
(235,187
)
Net unrealized gains arising during period
48,489

 
—

 
—

 
48,489

Amounts reclassified from accumulated other comprehensive loss
(5,278
)
 
13,863

 
6,341

 
14,926

Net current period other comprehensive income
43,211

 
13,863

 
6,341

 
63,415

Ending balance
$
4,706

 
$
(57,286
)
 
$
(119,192
)
 
$
(171,772
)
 
 
 
 
 
 
 
 
 
Nine months ended September 30, 2018
(Dollars in thousands)
Unrealized gains (losses) on securities available for sale(1)
 
Unrealized losses on securities available for sale transferred to held to maturity(1)
 
Defined benefit pension items(1)
 
Total
Beginning balance
$
(30,945
)
 
$
—

 
$
(91,349
)
 
$
(122,294
)
Cumulative effect adjustments(2)
(29,751
)
 
—

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

 
(111,649
)
 
(172,345
)
Net unrealized losses arising during period
(7,435
)
 
(84,321
)
 
—

 
(91,756
)
Amounts reclassified from accumulated other comprehensive loss
—

 
8,452

 
8,074

 
16,526

Net current period other comprehensive (loss) income
(7,435
)
 
(75,869
)
 
8,074

 
(75,230
)
Ending balance
$
(68,131
)
 
$
(75,869
)
 
$
(103,575
)
 
$
(247,575
)
(1) All amounts are net of tax. Amounts in parentheses indicate debits.
(2) 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 income (loss) and the line item affected in the statement where net income is presented for the three and nine months ended September 30, 2019 and September 30, 2018:
 
 
Three months ended September 30, 2019
(Dollars in thousands)

         Details about accumulated other comprehensive income (loss)
 
Amounts reclassified from accumulated other comprehensive income (loss)(1)
 
Affected line item in the statement where net income is presented
Unrealized gains on securities available for sale
 
$
1,136

 
Realized gains on investment securities available for sale, net
 
 
(262
)
 
Income taxes
 
 
$
874

 

 
 
 
 
 
Amortization of unrealized losses on securities available for sale transferred to held to maturity
 
$
(6,095
)
 
Net interest income
 
 
1,402

 
Income taxes
 
 
$
(4,693
)
 

 
 
 
 
 
Amortization of defined benefit pension items
 
 
 
 
Prior service costs
 
$
(15
)
 
Salaries and wages
Actuarial losses
 
(2,730
)
 
Other
 
 
(2,745
)
 
Income before income taxes
 
 
631

 
Income taxes
 
 
$
(2,114
)
 

Total reclassifications for the period
 
$
(5,933
)
 
 
 
 
 
 
 
 
 
Three months ended September 30, 2018
Details about accumulated other comprehensive income (loss)
 
Amounts reclassified from accumulated other comprehensive income (loss)(1)
 
Affected line item in the statement where net income is presented
Amortization of unrealized losses on securities available for sale transferred to held to maturity
 
$
(6,502
)
 
Net interest income
 
 
1,495

 
Income taxes
 
 
$
(5,007
)
 

 
 
 
 
 
Amortization of defined benefit pension items
 
 
 
 
Prior service costs
 
$
(19
)
 
Salaries and wages
Actuarial losses
 
(3,476
)
 
Other
 
 
(3,495
)
 
Income before income taxes
 
 
804

 
Income taxes
 
 
$
(2,691
)
 

Total reclassifications for the period
 
$
(7,698
)
 
 
(1) Amounts in parentheses indicate debits to income.
 
 
 
 
 
 
Nine months ended September 30, 2019
Details about accumulated other comprehensive income (loss)
 
Amounts reclassified from accumulated other comprehensive income (loss)(1)
 
Affected line item in the statement where net income is presented
Unrealized gains on securities available for sale
 
$
6,855

 
Realized gains on investment securities available for sale, net
 
 
(1,577
)
 
Income taxes
 
 
$
5,278

 

 
 
 
 
 
Amortization of unrealized losses on securities available for sale transferred to held to maturity
 
$
(18,004
)
 
Net interest income
 
 
4,141

 
Income taxes
 
 
$
(13,863
)
 

 
 
 
 
 
Amortization of defined benefit pension items
 
 
 
 
Prior service costs
 
$
(43
)
 
Salaries and wages
Actuarial losses
 
(8,192
)
 
Other
 
 
(8,235
)
 
Income before income taxes
 
 
1,894

 
Income taxes
 
 
$
(6,341
)
 

Total reclassifications for the period
 
$
(14,926
)
 
 
 
 
 
 
 
 
 
Nine months ended September 30, 2018
Details about accumulated other comprehensive income (loss)
 
Amounts reclassified from accumulated other comprehensive income (loss)(1)
 
Affected line item in the statement where net income is presented
Amortization of unrealized losses on securities available for sale transferred to held to maturity
 
$
(10,975
)
 
Net interest income
 
 
2,523

 
Income taxes
 
 
$
(8,452
)
 

 
 
 
 
 
Amortization of defined benefit pension items
 
 
 
 
Prior service costs
 
$
(59
)
 
Salaries and wages
Actuarial losses
 
(10,427
)
 
Other
 
 
(10,486
)
 
Income before income taxes
 
 
2,412

 
Income taxes
 
 
$
(8,074
)
 

Total reclassifications for the period
 
$
(16,526
)
 
 
(1) Amounts in parentheses indicate debits to income.