LOAN SERVICING RIGHTS - Schedule of Activity of Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance			$ 150,457
Ending balance	$ 171,201		171,201
Residential mortgage servicing rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	160,021	$ 257,112	147,014	$ 206,944
Additions	13,265	14,893	35,726	58,145
Amortization	(4,907)	(6,939)	(14,361)	(20,515)
Recoveries	0	1,332	0	21,824
Reduction due to disposal	0	(121,634)	0	(121,634)
Ending balance	168,379	144,764	168,379	144,764
Residential mortgage servicing valuation allowance
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	0	5,290	0	25,782
Recoveries	0	(1,332)	0	(21,824)
Reduction due to disposal	0	(3,958)	0	(3,958)
Ending balance	0	0	0	0
SBA servicing rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	3,097	4,954	3,443	5,556
Additions	33	99	348	873
Amortization	(308)	(735)	(969)	(2,111)
Ending balance	$ 2,822	$ 4,318	$ 2,822	$ 4,318