LOAN SERVICING RIGHTS - Schedule of Activity of Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	$ 150,457
Ending balance	153,152
Residential mortgage servicing rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	147,014	$ 206,944
Additions	7,730	21,701
Amortization	(4,758)	(6,062)
Recoveries	0	9,653
Ending balance	149,986	232,236
Residential mortgage servicing valuation allowance
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	0	25,782
Recoveries	0	(9,653)
Ending balance	0	16,129
SBA servicing rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	3,443	5,556
Additions	44	538
Amortization	(321)	(710)
Ending balance	$ 3,166	$ 5,384