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Other Comprehensive Income (Loss)
6 Months Ended
Jun. 30, 2023
Equity [Abstract]  
Other Comprehensive Income (Loss) Other Comprehensive Income (Loss)
    The following tables present the components of other comprehensive income (loss), both gross and net of tax, for the three and six months ended June 30, 2023 and 2022:
 For the Three Months Ended June 30,
20232022
Before TaxTax EffectAfter TaxBefore TaxTax EffectAfter Tax
(In thousands)
Components of other comprehensive income (loss):
Unrealized gain (loss) on debt securities available for sale:$4,413 $(1,248)$3,165 $(52,246)$14,570 $(37,676)
Accretion of unrealized (loss) on debt securities reclassified as held to maturity(2)(1)(4)(3)
Reclassification adjustment for (loss) gain included in net income(9,552)2,701 (6,851)210 (58)152 
(5,141)1,454 (3,687)(52,040)14,513 (37,527)
Derivatives:
Unrealized gain on swap contracts accounted for as cash flow hedges4,020 (1,137)2,883 1,149 (321)828 
4,020 (1,137)2,883 1,149 (321)828 
Employee benefit plans:
Amortization of prior service cost included in net income(14)(10)(14)(11)
Reclassification adjustment of actuarial net gain (loss) included in net income— (339)95 (244)
Change in funded status of retirement obligations3,486 (986)2,500 (25,704)7,168 (18,536)
3,473 (982)2,491 (26,057)7,266 (18,791)
Total other comprehensive income (loss)$2,352 $(665)$1,687 $(76,948)$21,458 $(55,490)
15.    Other Comprehensive Income (Loss) (continued)

For the Six Months Ended June 30,
20232022
Before TaxTax EffectAfter TaxBefore TaxTax EffectAfter Tax
(In thousands)
Components of other comprehensive income (loss):
Unrealized gain (loss) on debt securities available for sale:$21,954 $(5,720)$16,234 $(132,429)$36,938 $(95,491)
Accretion of unrealized (loss) on debt securities reclassified as held to maturity$(13)$$(9)$(8)$$(6)
Reclassification adjustment for (loss) gain included in net income(10,847)3,068 (7,779)210 (58)152 
11,094 (2,648)8,446 (132,227)36,882 (95,345)
Derivatives:
Unrealized gain on swap contracts accounted for as cash flow hedges2,816 (798)2,018 5,532 (1,547)3,985 
2,816 (798)2,018 5,532 (1,547)3,985 
Employee benefit plans:
Amortization of prior service cost included in net income(28)(20)(28)(22)
Reclassification adjustment of actuarial net gain (loss) included in net income(1)(678)190 (488)
Change in funded status of retirement obligations3,512 (832)2,680 (24,997)6,941 (18,056)
3,486 (825)2,661 (25,703)7,137 (18,566)
Total other comprehensive (loss)$17,396 $(4,271)$13,125 $(152,398)$42,472 $(109,926)
15.    Other Comprehensive Income (Loss) (continued)

    The following tables present the changes in the components of accumulated other comprehensive income (loss), net of tax, for the three and six months ended June 30, 2023 and 2022:
 For the Three Months Ended June 30,
20232022
Unrealized Gains (Losses) on Debt Securities Available for SaleUnrealized Gains (Losses) on SwapsEmployee Benefit PlansAccumulated Other Comprehensive (Loss)Unrealized Gains (Losses) on Debt Securities Available for SaleUnrealized Gains (Losses) on SwapsEmployee Benefit PlansAccumulated Other Comprehensive (Loss)
(In thousands)
Balance at beginning of period$(123,349)$(361)$(44,148)$(167,858)$(56,174)$(1,760)$(42,421)$(100,355)
Current period changes in other comprehensive income (loss)(3,687)2,883 2,491 1,687 (37,527)828 (18,791)(55,490)
Total other comprehensive income (loss)$(127,036)$2,522 $(41,657)$(166,171)$(93,701)$(932)$(61,212)$(155,845)

For the Six Months Ended June 30,
20232022
Unrealized Gains (Losses) on Debt Securities Available for SaleUnrealized Gains (Losses) on SwapsEmployee Benefit PlansAccumulated Other Comprehensive (Loss)Unrealized Gains (Losses) on Debt Securities Available for SaleUnrealized Gains (Losses) on SwapsEmployee Benefit PlansAccumulated Other Comprehensive (Loss)
(In thousands)
Balance at beginning of period$(135,482)$504 $(44,318)$(179,296)$1,644 $(4,917)$(42,646)$(45,919)
Current period changes in other comprehensive income (loss)8,446 2,018 2,661 13,125 (95,345)3,985 (18,566)(109,926)
Total other comprehensive income (loss)$(127,036)$2,522 $(41,657)$(166,171)$(93,701)$(932)$(61,212)$(155,845)
15.    Other Comprehensive Income (Loss) (continued)

    The following tables reflect amounts reclassified from accumulated other comprehensive income (loss) to the Consolidated Statements of Income and the affected line item in the statement where net income is presented for the three and six months ended June 30, 2023 and 2022:
Accumulated Other Comprehensive Income (Loss) Components
 For the Three Months Ended June 30,Affected Line Items in the Consolidated Statements of Income
20232022
(In thousands)
Reclassification adjustment for (loss) gain included in net income$(9,552)$210 (Loss) gain on securities transactions
Reclassification adjustment of actuarial net gain (loss) included in net income(339)Other non-interest expense
      Total before tax (9,551)(129)
      Income tax benefit2,701 37 
      Net of tax$(6,850)$(92)


Accumulated Other Comprehensive Income (Loss) Components
For the Six Months Ended June 30,Affected Line Items in the Consolidated Statements of Income
20232022
(In thousands)
Reclassification adjustment for (loss) gain included in net income$(10,847)$210 (Loss) gain on securities transactions
Reclassification adjustment of actuarial net gain (loss) included in net income(678)Other non-interest expense
Total before tax(10,845)(468)
Income tax benefit3,067 132 
Net of tax$(7,778)$(336)