NONINTEREST INCOME - Investment Management and Fiduciary Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Total investment management and fiduciary income
Revenue from External Customer [Line Items]
Noninterest income	$ 121,608	$ 62,348	$ 48,979
Trust fees
Revenue from External Customer [Line Items]
Noninterest income	79,472	43,725	33,288
Wealth management and advisory fees
Revenue from External Customer [Line Items]
Noninterest income	$ 42,136	$ 18,623	$ 15,691