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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Economic Hedges and Non-hedging Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Interest rate swaps | Economic hedges | Industrial revenue bond
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	$ (124)	$ 88	$ (13)	$ 163
Interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	53,303	(24,728)	34,124	(21,934)
Favorable change in credit valuation adjustment recognized in other non-interest income	0	0	0	0
Reverse interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	(53,303)	24,728	(34,124)	21,934
Risk participation agreements | Economic hedges
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	120	65	264	73
Forward commitments | Economic hedges
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	20	(53)	31	2
Commitments to lend | Non-hedging derivatives
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	64	(46)	131	(26)
Realized gain in other non-interest income	$ 350	$ 210	$ 1,909	$ 304

X

- Definition

The favorable changes in credit valuation adjustments on derivative instruments that were recognized in other non-interest income during the current period.

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