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CHANGE IN ACCUMULATED OTHER COMPREHENSIVE INCOME
 3 Months Ended
Mar. 31, 2020
Equity [Abstract]  
CHANGE IN ACCUMULATED OTHER COMPREHENSIVE INCOME
18. CHANGE IN ACCUMULATED OTHER COMPREHENSIVE INCOME
Accumulated other comprehensive income includes unrealized gains and losses on available-for-sale investments, unrealized gains and losses on cash flow hedges, as well as unrecognized prior service costs, transition costs, and actuarial gains and losses on defined benefit pension plans. Changes to accumulated other comprehensive income are presented, net of tax, as a component of stockholders’ equity. Amounts that are reclassified out of accumulated other comprehensive income are recorded on the unaudited Consolidated Statement of Income either as a gain or loss.
Changes to accumulated other comprehensive income by component are shown, net of taxes, in the following tables for the period indicated:
(Dollars in thousands)Net change in
investment
securities
available-for-sale		Net change
in investment securities
held-to-maturity		Net
change in
defined
benefit
plan		Net change in
fair value of
derivatives
used for cash
flow hedges		Total
Balance, December 31, 2019$26,927  $468  $(3,317) $(577) $23,501  
Other comprehensive income before reclassifications46,036  —  36  1,585  47,657  
Less: Amounts reclassified from accumulated other comprehensive income(527) (65) (32) —  (624) 
Net current-period other comprehensive income (loss)45,509  (65) 4  1,585  47,033  
Balance, March 31, 2020$72,436  $403  $(3,313) $1,008  $70,534  
Balance, December 31, 2018$(14,553) $779  $834  $(2,454) $(15,394) 
Other comprehensive income (loss) before reclassifications17,265  (2) (99) 630  17,794  
Less: Amounts reclassified from accumulated other comprehensive income(11) (91) (42) —  (144) 
Net current-period other comprehensive income (loss)17,254  (93) (141) 630  17,650  
Balance, March 31, 2019$2,701  $686  $693  $(1,824) $2,256  

The unaudited Consolidated Statements of Income were impacted by components of other comprehensive income as shown in the table below:
Three Months Ended March 31,Affected line item in unaudited Consolidated Statements of Income
(Dollars in thousands)20202019
Securities available for sale:
Realized gains on securities transactions$(693) $(15) Securities gains, net
Income taxes166  4  Income tax provision
Net of tax$(527) $(11) 
Net unrealized holding gains on securities transferred between available-for-sale and held-to-maturity:
Amortization of net unrealized gains to income during the period$(85) $(120) Interest and dividends on investment securities
Income taxes20  29  Income tax provision
Net of tax$(65) $(91) 
Amortization of Defined Benefit Pension items:
Prior service credits
$(19) $(19) 
Actuarial gains(23) (15) 
Total before tax$(42) $(34) Salaries, benefits and other compensation
Income taxes10  (8) Income tax provision
Net of tax(32) (42) 
Total reclassifications$(624) $(144)