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Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2025

Equity [Abstract]

Comprehensive Income (Loss)

The before and after-tax amounts allocated to each component of other comprehensive income (loss) are presented in the following table. Reclassification adjustments related to securities available for sale are included in net gain (loss) on securities transactions in the accompanying consolidated statements of income. Reclassification adjustments related to defined-benefit post-retirement benefit plans are included in the computation of net periodic pension expense (see Note 11 – Defined Benefit Plans).

			Three Months Ended March 31, 2025																		Three Months Ended March 31, 2024
			Before Tax Amount						Tax  Expense, (Benefit)						Net of Tax Amount						Before Tax Amount						Tax  Expense, (Benefit)						Net of Tax Amount
Securities available for sale and transferred securities:
Change in net unrealized gain/loss during the period			$	155,632					$	32,683					$	122,949					$	(199,075)					$	(41,806)					$	(157,269)
Change in net unrealized gain on securities transferred to held to maturity			(521)						(109)						(412)						(159)						(34)						(125)
Reclassification adjustment for net (gains) losses included in net income			14						3						11						—						—						—
Total securities available for sale and transferred securities			155,125						32,577						122,548						(199,234)						(41,840)						(157,394)
Defined-benefit post-retirement benefit plans:
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit)			310						65						245						418						88						330
Total defined-benefit post-retirement benefit plans			310						65						245						418						88						330
Total other comprehensive income (loss)			$	155,435					$	32,642					$	122,793					$	(198,816)					$	(41,752)					$	(157,064)

Schedule of Accumulated Other Comprehensive Income (Loss)

Activity in accumulated other comprehensive income (loss), net of tax, was as follows:

			Securities Available For Sale						Defined Benefit Plans						Accumulated Other Comprehensive Income
Balance at January 1, 2025			$	(1,230,828)					$	(21,176)					$	(1,252,004)
Other comprehensive income (loss) before reclassifications			122,537						—						122,537
Reclassification of amounts included in net income			11						245						256
Net other comprehensive income (loss) during period			122,548						245						122,793
Balance at March 31, 2025			$	(1,108,280)					$	(20,931)					$	(1,129,211)
Balance at January 1, 2024			$	(1,094,794)					$	(24,425)					$	(1,119,219)
Other comprehensive income (loss) before reclassifications			(157,394)						—						(157,394)
Reclassification of amounts included in net income			—						330						330
Net other comprehensive income (loss) during period			(157,394)						330						(157,064)
Balance at March 31, 2024			$	(1,252,188)					$	(24,095)					$	(1,276,283)

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Tabular disclosure of the components of accumulated other comprehensive income (loss).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 20
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481694/830-30-45-20

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Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Paragraph 1
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