NONINTEREST INCOME - Schedule of Investment Management and Fiduciary Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Investment management and fiduciary income
Revenue from External Customer [Line Items]
Noninterest income	$ 37,606	$ 32,379	$ 70,534	$ 62,855
Trust fees
Revenue from External Customer [Line Items]
Noninterest income	26,143	21,936	48,004	42,452
Wealth management and advisory fees
Revenue from External Customer [Line Items]
Noninterest income	$ 11,463	$ 10,443	$ 22,530	$ 20,403