DERIVATIVES AND HEDGING ACTIVITIES - Cash Flow Hedge on Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
DERIVATIVES AND HEDGING ACTIVITIES
Total Interest Income	$ 80,243	$ 77,390
Interest Income
DERIVATIVES AND HEDGING ACTIVITIES
Total Interest Income	80,243	77,390
Interest rate swaps, net of income taxes	261	(2,628)
Interest Income \| Terminated interest rate swaps, net of income taxes
DERIVATIVES AND HEDGING ACTIVITIES
Interest rate swaps, net of income taxes	2,003	2,025
Interest Income \| Active interest rate swaps, net of income taxes
DERIVATIVES AND HEDGING ACTIVITIES
Interest rate swaps, net of income taxes	(1,742)	(4,653)
Interest Expense
DERIVATIVES AND HEDGING ACTIVITIES
Total Interest Expense	$ 30,909	$ 32,574

Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.

- Definition

Amount of interest expense classified as operating and nonoperating. Includes, but is not limited to, cost of borrowing accounted for as interest expense.

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