CHANGE IN ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Schedule of 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		Net change in equity method investments		Total
Balance, December 31, 2023	$	(499,932)	$	(91,523)	$	(4,614)	$	1,597	$	481	$	(593,991)
Other comprehensive (loss) income	(40,007)		—		(75)		(6,433)		(21)		(46,536)
Less: Amounts reclassified from accumulated other comprehensive loss	—		3,669		(49)		—		—		3,620
Net current-period other comprehensive (loss) income	(40,007)		3,669		(124)		(6,433)		(21)		(42,916)
Balance, March 31, 2024	$	(539,939)	$	(87,854)	$	(4,738)	$	(4,836)	$	460	$	(636,907)
Balance, December 31, 2022	$	(563,533)	$	(108,503)	$	(4,482)	$	108	$	566	$	(675,844)
Other comprehensive income (loss)	53,010		(1)		12		332		(3)		53,350
Less: Amounts reclassified from accumulated other comprehensive loss	—		4,166		(47)		(40)		—		4,079
Net current-period other comprehensive income (loss)	53,010		4,165		(35)		292		(3)		57,429
Balance, March 31, 2023	$	(510,523)	$	(104,338)	$	(4,517)	$	400	$	563	$	(618,415)

Schedule of Components of Other Comprehensive Loss

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

	Three Months Ended March 31,				Affected line item in unaudited Consolidated Statements of Income
(Dollars in thousands)	2024		2023
Net unrealized holding losses on securities transferred between available-for-sale and held-to-maturity:
Amortization of net unrealized losses to income during the period	4,827		5,481		Net interest income
Income taxes	(1,158)		(1,315)		Income tax provision
Net of tax	3,669		4,166
Amortization of defined benefit pension plan-related items:
Prior service credits	(19)		(19)
Actuarial gains	(45)		(43)
Total before tax	(64)		(62)		Salaries, benefits and other compensation
Income taxes	15		15		Income tax provision
Net of tax	(49)		(47)
Net unrealized gains on terminated cash flow hedges:
Amortization of net unrealized gains to income during the period	—		(52)		Interest and fees on loans and leases
Income taxes	—		12		Income tax provision
Net of tax	—		(40)
Total reclassifications	$	3,620	$	4,079