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Accumulated Other Comprehensive (Loss) Income (Tables)

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Changes in other comprehensive income (loss)

The following table presents the components of other comprehensive income (loss):

			Before-Tax Amount						Tax Effect						Net of Tax Amount
			(dollars in thousands)
Three months ended September 30, 2023
Net unrealized losses on securities			$	(135,811)					$	30,761					$	(105,050)
Amortization of net unrealized gains on AFS securities transferred to HTM(1)			1,932						(438)						1,494
Net unrealized holding gains arising during the period on interest rate derivatives used in cash flow hedges			4,691						(1,040)						3,651
Reclassification adjustment for net change realized in net income on interest rate derivatives used in cash flow hedges			6,248						172						6,420
Amortization of net unrecognized pension and postretirement items(2)			18						(3)						15
Total Other Comprehensive Loss			$	(122,922)					$	29,452					$	(93,470)
Three months ended September 30, 2022
Net unrealized losses on securities			$	(155,758)					$	35,373					$	(120,385)
Reclassification adjustment for securities net change included in net income(3)			(53)						12						(41)
Amortization of net unrealized gains on AFS securities transferred to HTM(1)			2,139						(486)						1,653
Net unrealized holding losses arising during the period on interest rate derivatives used in cash flow hedges			(29,053)						6,581						(22,472)
Reclassification adjustment for net change realized in net income on interest rate derivatives used in cash flow hedges			3,210						(727)						2,483
Amortization of net unrecognized pension and postretirement items(2)			33						(8)						25
Total Other Comprehensive Loss			$	(179,482)					$	40,745					$	(138,737)
Nine months ended September 30, 2023
Unrealized loss on securities			$	(133,973)					$	30,345					$	(103,628)
Reclassification adjustment for securities net change included in net income(3)			19						(5)						14
Amortization of net unrealized gains on AFS securities transferred to HTM(1)			5,783						(1,310)						4,473
Net unrealized holding gains (losses) arising during the period on interest rate derivatives used in cash flow hedges			9,975						(18,730)						(8,755)
Reclassification adjustment for net change realized in net income on interest rate swaps used in cash flow hedges			20,437						136						20,573
Amortization of net unrecognized pension and postretirement item(2)			55						(12)						43
Total Other Comprehensive Loss			$	(97,704)					$	10,424					$	(87,280)
Nine months ended September 30, 2022
Unrealized loss on securities			$	(469,137)					$	106,541					$	(362,596)
Reclassification adjustment for securities net change included in net income(3)			(26)						6						(20)
Amortization of net unrealized losses on AFS securities transferred to HTM(1)			(59,547)						13,523						(46,024)
Net unrealized holding losses arising during the period on interest rate derivatives used in cash flow hedges			(80,716)						18,282						(62,434)
Reclassification adjustment for change realized in net income on interest rate swaps used in cash flow hedges			828						(187)						641
Amortization of net unrecognized pension and postretirement items(2)			96						(21)						75
Total Other Comprehensive Loss			$	(608,502)					$	138,144					$	(470,358)

(1) Amounts reclassified out of AOCI. Before-tax amounts included as a reduction to "Interest Income" on the Consolidated Statements of Income.

(2) Amounts reclassified out of AOCI. Before-tax amounts included in "Salaries and employee benefits" on the Consolidated Statements of Income. See "Note

12 - Employee Benefit Plans," for additional details.

(3) Amounts reclassified out of AOCI. Before-tax amounts included in "Investment securities gains, net" on the Consolidated Statements of Income. See "Note 4

- Investment Securities," for additional details.

Changes in each component of accumulated other comprehensive income (loss)

The following table presents changes in each component of accumulated other comprehensive income (loss), net of tax:

			Unrealized Gains (Losses) on Investment Securities						Net Unrealized Gain (Loss) on Interest Rate Derivatives used in Cash Flow Hedges												Unrecognized Pension and Postretirement Plan Income (Costs)						Total
			(dollars in thousands)
Three months ended September 30, 2023
Balance at June 30, 2023			$	(311,816)					$	(60,029)											$	(7,441)					$	(379,286)
OCI before reclassifications			(105,050)						3,651												—						(101,399)
Amounts reclassified from AOCI			—						6,420												15						6,435
Amortization of net unrealized gains on AFS securities transferred to HTM			1,494						—												—						1,494
Balance at September 30, 2023			$	(415,372)					$	(49,958)											$	(7,426)					$	(472,756)
Three months ended September 30, 2022
Balance at June 30, 2022			$	(249,427)					$	(46,620)											$	(8,163)					$	(304,210)
OCI before reclassifications			(120,385)						(22,472)												—						(142,857)
Amounts reclassified from AOCI			(41)						2,483												25						2,467
Amortization of net unrealized losses on AFS securities transferred to HTM			1,653						—												—						1,653
Balance at September 30, 2022			$	(368,200)					$	(66,609)											$	(8,138)					$	(442,947)
Nine months ended September 30, 2023
Balance at December 31, 2022			$	(316,231)					$	(61,776)											$	(7,469)					$	(385,476)
OCI before reclassifications			(103,628)						(8,755)												—						(112,383)
Amounts reclassified from AOCI			14						20,573												43						20,630
Amortization of net unrealized gains on AFS securities transferred to HTM			4,473						—												—						4,473
Balance at September 30, 2023			$	(415,372)					$	(49,958)											$	(7,426)					$	(472,756)
Nine months ended September 30, 2022
Balance at December 31, 2021			$	40,440					$	(4,816)											$	(8,213)					$	27,411
OCI before reclassifications			(362,596)						(62,434)												—						(425,030)
Amounts reclassified from AOCI			(20)						641												75						696
Amortization of net unrealized losses on AFS securities transferred to HTM			(46,024)						—												—						(46,024)
Balance at September 30, 2022			$	(368,200)					$	(66,609)											$	(8,138)					$	(442,947)

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

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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

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-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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-Topic 220
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-Name Accounting Standards Codification
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