CHANGE IN ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

6 Months Ended

Jun. 30, 2023

Equity [Abstract]

Components of Accumulated Other Comprehensive Loss

Changes to accumulated other comprehensive loss 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(1)		Net change in equity method investments		Total
Balance, March 31, 2023	$	(510,523)	$	(104,338)	$	(4,517)	$	400	$	563	$	(618,415)
Other comprehensive loss	(40,367)		—		(7)		(1,475)		(101)		(41,950)
Less: Amounts reclassified from accumulated other comprehensive loss	—		4,393		(47)		(40)		—		4,306
Net current-period other comprehensive loss	(40,367)		4,393		(54)		(1,515)		(101)		(37,644)
Balance, June 30, 2023	$	(550,890)	$	(99,945)	$	(4,571)	$	(1,115)	$	462	$	(656,059)
Balance, March 31, 2022	$	(309,791)	$	147	$	(4,718)	$	229	$	353	$	(313,780)
Other comprehensive (loss) income(2)	(85,422)		(119,824)		(1)		—		188		(205,059)
Less: Amounts reclassified from accumulated other comprehensive loss	—		28		(27)		(40)		—		(39)
Net current-period other comprehensive (loss) income	(85,422)		(119,796)		(28)		(40)		188		(205,098)
Balance, June 30, 2022	$	(395,213)	$	(119,649)	$	(4,746)	$	189	$	541	$	(518,878)
(1)Cash flow hedges were terminated as of April 1, 2020
(2)Includes $119.8 million, net of tax, of unrealized losses on transferred investment securities from available-for-sale to held-to-maturity.
(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 (1)		Net change in equity method investments		Total
Balance, December 31, 2022	$	(563,533)	$	(108,503)	$	(4,482)	$	108	$	566	$	(675,844)
Other comprehensive income (loss)	12,643		—		5		(1,143)		(104)		11,401
Less: Amounts reclassified from accumulated other comprehensive loss	—		8,558		(94)		(80)		—		8,384
Net current-period other comprehensive income (loss)	12,643		8,558		(89)		(1,223)		(104)		19,785
Balance, June 30, 2023	$	(550,890)	$	(99,945)	$	(4,571)	$	(1,115)	$	462	$	(656,059)
Balance, December 31, 2021	$	(33,873)	$	175	$	(4,691)	$	268	$	353	$	(37,768)
Other comprehensive (loss) income(2)	(361,340)		(119,768)		—		1		188		(480,919)
Less: Amounts reclassified from accumulated other comprehensive loss	—		(56)		(55)		(80)		—		(191)
Net current-period other comprehensive (loss) income	(361,340)		(119,824)		(55)		(79)		188		(481,110)
Balance, June 30, 2022	$	(395,213)	$	(119,649)	$	(4,746)	$	189	$	541	$	(518,878)
(1)Cash flow hedges were terminated as of April 1, 2020
(2)Includes $119.8 million, net of tax, of unrealized losses on transferred investment securities from available-for-sale to held-to-maturity.

Components of Other Comprehensive Income

The unaudited Consolidated Statements of Income were impacted by components of other comprehensive income as shown in the tables below:

	Three Months Ended June 30,				Affected line item in unaudited Consolidated Statements of Income
(Dollars in thousands)	2023		2022
Net unrealized holding losses (gains) on securities transferred between available-for-sale and held-to-maturity:
Amortization of net unrealized losses (gains) to income during the period	5,779		37		Net interest income
Income taxes	(1,386)		(9)		Income tax provision
Net of tax	4,393		28
Amortization of defined benefit pension plan-related items:
Prior service credits	(19)		(19)
Actuarial (gains) losses	(43)		(17)
Total before tax	(62)		(36)		Salaries, benefits and other compensation
Income taxes	15		9		Income tax provision
Net of tax	(47)		(27)
Net unrealized gains on terminated cash flow hedges:
Amortization of net unrealized gains to income during the period	(53)		(53)		Interest and fees on loans and leases
Income taxes	13		13		Income tax provision
Net of tax	(40)		(40)
Total reclassifications	$	4,306	$	(39)
	Six Months Ended June 30,				Affected line item in unaudited Consolidated Statements of Operations
	2023		2022
Net unrealized holding losses (gains) on securities transferred between available-for-sale and held-to-maturity:
Amortization of net unrealized losses (gains) to income during the period	11,260		(74)		Net interest income
Income taxes	(2,702)		18		Income tax provision
Net of tax	8,558		(56)
Amortization of defined benefit pension plan-related items:
Prior service credits	(38)		(38)
Actuarial losses (gains)	(86)		(34)
Total before tax	(124)		(72)		Salaries, benefits and other compensation
Income taxes	30		17		Income tax provision
Net of tax	(94)		(55)
Net unrealized gains on terminated cash flow hedges:
Amortization of net unrealized gains to income during the period	(105)		(105)		Interest and fees on loans and leases
Income taxes	25		25		Income tax provision
Net of tax	(80)		(80)
Total reclassifications	$	8,384	$	(191)