LOANS HELD FOR SALE, AT FAIR VALUE - Components of Gain on Origination and Sale of Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Receivables [Abstract]
(Discount) premium from loan sales	$ (27,437)	$ 9,991	$ 12,291	$ 18,198
Servicing rights additions	98,335	66,940	185,485	119,626
Unrealized (losses) gains from derivative assets and liabilities	(32,297)	231	12,153	(18,243)
Realized gains from derivative assets and liabilities	36,260	7,069	20,093	16,243
Discount points, rebates and lender paid costs	90,251	99,118	159,533	179,799
Fair value gain (loss)	15,347	(4,909)	(13,425)	29,438
Provision for loan loss obligation for loans sold	(3,719)	(3,630)	(7,384)	(3,875)
Total gain on origination and sale of loans, net	$ 176,740	$ 174,810	$ 368,746	$ 341,186

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.