NONINTEREST INCOME - Schedule of Investment Management and Fiduciary Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Investment management and fiduciary income
Revenue from External Customer [Line Items]
Noninterest income	$ 36,648	$ 32,720	$ 107,182	$ 95,575
Trust fees
Revenue from External Customer [Line Items]
Noninterest income	25,295	22,062	73,299	64,514
Wealth management and advisory fees
Revenue from External Customer [Line Items]
Noninterest income	$ 11,353	$ 10,658	$ 33,883	$ 31,061