DERIVATIVE FINANCIAL INSTRUMENTS - Fair Values of Derivative Instruments (Details) $ in Thousands	Dec. 31, 2024 USD ($) instrument	Dec. 31, 2023 USD ($) instrument
Derivatives, Fair Value [Line Items]
Notional	$ 7,802,391	$ 5,997,253
Total derivatives	9,977	2,005
Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional	1,500,000	750,000
Derivative asset	$ 14,265	$ 15,578
Derivatives Designated as Hedging Instruments | Interest rate products
Derivatives, Fair Value [Line Items]
Number of derivative instruments | instrument	18	9
Notional	$ 1,500,000
Derivative asset	14,265	$ 15,578
Derivatives Designated as Hedging Instruments | Interest rate products | Other liabilities
Derivatives, Fair Value [Line Items]
Notional		750,000
Derivatives Not Designated as Hedging Instruments | Interest rate products
Derivatives, Fair Value [Line Items]
Derivative asset	153,980	136,924
Derivative liability	(153,980)	(136,924)
Derivatives Not Designated as Hedging Instruments | Interest rate products | Other assets
Derivatives, Fair Value [Line Items]
Notional	2,942,675	2,428,306
Derivatives Not Designated as Hedging Instruments | Interest rate products | Other liabilities
Derivatives, Fair Value [Line Items]
Notional	2,942,675	2,383,443
Derivatives Not Designated as Hedging Instruments | Interest rate lock commitments with clients
Derivatives, Fair Value [Line Items]
Derivative asset	612	637
Derivative liability	(18)
Derivatives Not Designated as Hedging Instruments | Interest rate lock commitments with clients | Other assets
Derivatives, Fair Value [Line Items]
Notional	41,238	34,651
Derivatives Not Designated as Hedging Instruments | Interest rate lock commitments with clients | Other liabilities
Derivatives, Fair Value [Line Items]
Notional	3,658
Derivatives Not Designated as Hedging Instruments | Forward sale commitments
Derivatives, Fair Value [Line Items]
Derivative asset	200	1
Derivative liability	(39)	(283)
Derivatives Not Designated as Hedging Instruments | Forward sale commitments | Other assets
Derivatives, Fair Value [Line Items]
Notional	28,927	1,000
Derivatives Not Designated as Hedging Instruments | Forward sale commitments | Other liabilities
Derivatives, Fair Value [Line Items]
Notional	27,071	37,348
Derivatives Not Designated as Hedging Instruments | FX forwards
Derivatives, Fair Value [Line Items]
Derivative asset	1,407	429
Derivative liability	(1,205)	(409)
Derivatives Not Designated as Hedging Instruments | FX forwards | Other assets
Derivatives, Fair Value [Line Items]
Notional	26,716	15,812
Derivatives Not Designated as Hedging Instruments | FX forwards | Other liabilities
Derivatives, Fair Value [Line Items]
Notional	25,924	13,064
Derivatives Not Designated as Hedging Instruments | Risk participation agreements sold
Derivatives, Fair Value [Line Items]
Derivative liability	(90)	(3)
Derivatives Not Designated as Hedging Instruments | Risk participation agreements sold | Other liabilities
Derivatives, Fair Value [Line Items]
Notional	110,948	103,648
Derivatives Not Designated as Hedging Instruments | Risk participation agreements purchased
Derivatives, Fair Value [Line Items]
Derivative asset	25	78
Derivatives Not Designated as Hedging Instruments | Risk participation agreements purchased | Other assets
Derivatives, Fair Value [Line Items]
Notional	97,201	116,804
Derivatives Not Designated as Hedging Instruments | Financial derivative related to sales of certain Visa Class B shares
Derivatives, Fair Value [Line Items]
Derivative liability	(5,180)	(14,023)
Derivatives Not Designated as Hedging Instruments | Financial derivative related to sales of certain Visa Class B shares | Other liabilities
Derivatives, Fair Value [Line Items]
Notional	$ 55,358	$ 113,177