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Other Comprehensive Income (Loss)
12 Months Ended
Dec. 31, 2021
Equity [Abstract]  
Other Comprehensive Income (Loss) Other Comprehensive Income (Loss)
The tax effects allocated to each component of other comprehensive income (loss) were as follows:
Before Tax
Amount
Tax Expense,
(Benefit)
Net of Tax
Amount
2021
Securities available for sale and transferred securities:
Change in net unrealized gain/loss during the period$(231,355)$(48,585)$(182,770)
Change in net unrealized gain on securities transferred to held to maturity(971)(204)(767)
Reclassification adjustment for net (gains) losses included in net income(69)(14)(55)
Total securities available for sale and transferred securities(232,395)(48,803)(183,592)
Defined-benefit post-retirement benefit plans:
Change in the net actuarial gain/loss16,593 3,485 13,108 
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit)
6,116 1,284 4,832 
Total defined-benefit post-retirement benefit plans22,709 4,769 17,940 
Total other comprehensive income (loss)$(209,686)$(44,034)$(165,652)
2020
Securities available for sale and transferred securities:
Change in net unrealized gain/loss during the period$427,331 $89,741 $337,590 
Change in net unrealized gain on securities transferred to held to maturity(1,256)(264)(992)
Reclassification adjustment for net (gains) losses included in net income(108,989)(22,888)(86,101)
Total securities available for sale and transferred securities317,086 66,589 250,497 
Defined-benefit post-retirement benefit plans:
Change in the net actuarial gain/loss(11,518)(2,419)(9,099)
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit)
5,319 1,117 4,202 
Total defined-benefit post-retirement benefit plans(6,199)(1,302)(4,897)
Total other comprehensive income (loss)$310,887 $65,287 $245,600 
2019
Securities available for sale and transferred securities:
Change in net unrealized gain/loss during the period$418,556 $87,897 $330,659 
Change in net unrealized gain on securities transferred to held to maturity(1,292)(271)(1,021)
Reclassification adjustment for net (gains) losses included in net income(293)(62)(231)
Total securities available for sale and transferred securities416,971 87,564 329,407 
Defined-benefit post-retirement benefit plans:
Change in the net actuarial gain/loss(3,644)(765)(2,879)
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit)
5,623 1,181 4,442 
Total defined-benefit post-retirement benefit plans1,979 416 1,563 
Total other comprehensive income (loss)$418,950 $87,980 $330,970 
Activity in accumulated other comprehensive income, net of tax, was as follows:
Securities
Available
For Sale
Defined
Benefit
Plans
Accumulated
Other
Comprehensive
Income
Balance January 1, 2021$563,801 $(50,831)$512,970 
Other comprehensive income (loss) before reclassification
(183,537)13,108 (170,429)
Reclassification of amounts included in net income
(55)4,832 4,777 
Net other comprehensive income (loss) during period(183,592)17,940 (165,652)
Balance December 31, 2021$380,209 $(32,891)$347,318 
Balance January 1, 2020$313,304 $(45,934)$267,370 
Other comprehensive income (loss) before reclassification
336,598 (9,099)327,499 
Reclassification of amounts included in net income
(86,101)4,202 (81,899)
Net other comprehensive income (loss) during period250,497 (4,897)245,600 
Balance December 31, 2020$563,801 $(50,831)$512,970 
Balance January 1, 2019$(16,103)$(47,497)$(63,600)
Other comprehensive income (loss) before reclassification
329,638 (2,879)326,759 
Reclassification of amounts included in net income
(231)4,442 4,211 
Net other comprehensive income (loss) during period329,407 1,563 330,970 
Balance December 31, 2019$313,304 $(45,934)$267,370