DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Cash pledged to secure obligations under derivative contracts | Not Designated as Hedging Instrument
Derivative [Line Items]
Variable rate, commercial loans that are supported by the interest rate swap contracts	$ 1,270,000	$ 1,160,000
Cash pledged to secure obligations under derivative contracts | Cash Flow Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	700,000	500,000
Prime Loan Swap | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	300,000
Prime Loan Swap | Cash Flow Hedging
Derivative [Line Items]
Notional amount	300,000	300,000
SOFR Loan Swaps | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	400,000
SOFR Loan Swaps | Cash Flow Hedging
Derivative [Line Items]
Notional amount	$ 400,000	$ 200,000