SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE - Schedule of Securities Sold under Agreements to Repurchase and Related Weighted-Average Interest Rates (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Securities Sold under Agreements to Repurchase [Abstract]
Outstanding at period end	$ 240,698	$ 277,594	$ 261,366
Average amount outstanding during the period	258,927	286,137
Maximum amount outstanding at any month-end during the period	$ 280,402	$ 311,335
Weighted-average interest rate:
Weighted-average interest rate during year	0.89%	0.90%
Weighted-average interest rate at end of year	0.89%	1.13%	0.95%

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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