DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Sep. 30, 2025

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Fair Values of Derivative Instruments

The table below presents the fair value of derivative financial instruments as well as their location on the unaudited Consolidated Statements of Financial Condition as of September 30, 2025.

	Fair Values of Derivative Instruments
(Dollars in thousands)		Count	Notional		Balance Sheet Location	Derivatives (Fair Value)
Derivatives designated as hedging instruments:
Interest rate options		23	$	2,000,000	Other assets	$	23,149
Total			$	2,000,000		$	23,149
Derivatives not designated as hedging instruments:
Interest rate swaps and options			$	3,105,482	Other assets	$	122,255
Interest rate swaps and options			3,107,460		Other liabilities	(122,257)
Interest rate lock commitments with clients			65,213		Other assets	1,064
Forward sale commitments			19,216		Other assets	66
Forward sale commitments			42,319		Other liabilities	(139)
FX forwards			13,665		Other assets	1,269
FX forwards			13,310		Other liabilities	(1,218)
Risk participation agreements sold			111,041		Other liabilities	(187)
Risk participation agreements purchased			133,029		Other assets	73
Financial derivatives related to sales of certain Visa Class B shares			53,499		Other liabilities	(5,155)
Total derivatives			$	8,664,234		$	18,920

The table below presents the fair value of derivative financial instruments as well as their location on the unaudited Consolidated Statements of Financial Condition as of December 31, 2024.

	Fair Values of Derivative Instruments
(Dollars in thousands)		Count	Notional		Balance Sheet Location	Derivatives (Fair Value)
Derivatives designated as hedging instruments:
Interest rate options		18	$	1,500,000	Other assets	$	14,265
Total			$	1,500,000		$	14,265
Derivatives not designated as hedging instruments:
Interest rate swaps and options			$	2,942,675	Other assets	$	153,980
Interest rate swaps and options			2,942,675		Other liabilities	(153,980)
Interest rate lock commitments with clients			41,238		Other assets	612
Interest rate lock commitments with clients			3,658		Other liabilities	(18)
Forward sale commitments			28,927		Other assets	200
Forward sale commitments			27,071		Other liabilities	(39)
FX forwards			26,716		Other assets	1,407
FX forwards			25,924		Other liabilities	(1,205)
Risk participation agreements sold			110,948		Other liabilities	(90)
Risk participation agreements purchased			97,201		Other assets	25
Financial derivatives related to sales of certain Visa Class B shares			55,358		Other liabilities	(5,180)
Total derivatives			$	7,802,391		$	9,977

Schedule of Effect of Derivative Instruments on the Income Statement

The table below presents the effect of the derivative financial instruments on the unaudited Consolidated Statements of Income for the three and nine months ended September 30, 2025 and September 30, 2024.

	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)				Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)				Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)
(Dollars in thousands)	Three Months Ended September 30,				Nine Months Ended September 30,
Derivatives in Cash Flow Hedging Relationships	2025		2024		2025		2024
Interest rate options	$	(215)	$	10,722	$	4,100	$	3,702	Interest income
Total	$	(215)	$	10,722	$	4,100	$	3,702
	Amount of Gain (Loss) Recognized in Income				Amount of Gain (Loss) Recognized in Income				Location of Gain (Loss) Recognized in Income
(Dollars in thousands)	Three Months Ended September 30,				Nine Months Ended September 30,
Derivatives not designated as hedging instruments	2025		2024		2025		2024
Interest rate swaps and options	$	2,646	$	2,774	$	5,357	$	7,928	Other income
Interest rate lock commitments with clients	(201)		143		455		399		Mortgage banking activities, net
Forward sale commitments	(304)		(977)		(1,063)		$	(733)	Mortgage banking activities, net
FX forwards	70		91		80		370		Other income
Risk participation agreements	(258)		(62)		(749)		(97)		Other income
Total	$	1,953	$	1,969	$	4,080	$	7,867