NONINTEREST INCOME - Schedule of Investment Management and Fiduciary Income (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Investment management and fiduciary income
Revenue from External Customer [Line Items]
Noninterest income	$ 32,928	$ 30,476
Trust fees
Revenue from External Customer [Line Items]
Noninterest income	21,861	20,516
Wealth management and advisory fees
Revenue from External Customer [Line Items]
Noninterest income	$ 11,067	$ 9,960

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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+ Details