DEPOSITS - Summary of Interest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deposits Liabilities, Balance Sheet, Reported Amounts [Abstract]
Interest-bearing demand	$ 26,671	$ 7,441	$ 2,262
Money market	122,168	13,536	3,218
Savings	5,733	965	586
Time deposits	45,184	5,626	7,332
Total customer interest expense	199,756	27,568	13,398
Brokered deposits	10,064	613	1,525
Total interest expense on deposits	$ 209,820	$ 28,181	$ 14,923