LOAN SERVICING RIGHTS - Schedule of Carrying Value of Loan Servicing Rights Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Servicing Assets at Fair Value [Line Items]
Loan servicing rights	$ 174,652	$ 150,457
Residential mortgage
Servicing Assets at Fair Value [Line Items]
Loan servicing rights	171,915	147,014	$ 206,944	$ 130,630
SBA
Servicing Assets at Fair Value [Line Items]
Loan servicing rights	2,737	3,443	5,556	5,839
Residential mortgage servicing impairment
Servicing Assets at Fair Value [Line Items]
Loan servicing rights	$ 0	$ 0	$ 25,782	$ 39,407