MORTGAGE SERVICING RIGHTS - Presentation of Activity Related to MSR (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Servicing Asset at Fair Value, Amount [Roll Forward]
Fair value, beginning of period	$ 2,122,196	$ 1,748,209
Purchases	863,113	397,585
Sales	(69,703)	0
Changes in valuation inputs or assumptions	162,011	92,374
Other changes, including realization of expected cash flows	(168,483)	(115,972)
Fair value, end of period	$ 2,909,134	$ 2,122,196