TRANSACTIONS WITH RELATED PARTIES (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Related Party Transaction [Line Items]
Fees receivables	[1],[2]	$ 154,976		$ 154,976		$ 127,114
Other assets	[2]	36,482		36,482		26,365
Revenue from fees	[3]	339,887	$ 249,283	940,305	$ 728,881
Variable Interest Entity, Not Primary Beneficiary
Related Party Transaction [Line Items]
Loan principal purchased			14,500		34,000
Financing receivable, credit loss, expense (reversal)			(12,800)		(31,200)
Related Party
Related Party Transaction [Line Items]
Fees receivables		100,200		100,200		99,400
Other assets		30,500		30,500		15,200
Revenue from fees		159,300	174,200	473,700	528,000
Related Party | Securitization Vehicles
Related Party Transaction [Line Items]
Fees receivables		78,300		78,300		79,000
Revenue from fees		150,800	154,300	447,700	474,100
Related Party | Other Financing Vehicles
Related Party Transaction [Line Items]
Fees receivables		21,900		21,900		$ 20,400
Revenue from fees		$ 8,500	$ 19,900	$ 26,000	$ 53,900

[1] Accrued interest receivable of $14.3 million, previously reported within “Fee receivables” as of December 31, 2024, has been reclassified to “Investment in loans and securities” to conform to the current period’s presentation.

[2] See Note 9 for additional information regarding the transactions with related parties.

[3] See Note 9 for additional information regarding the transactions with related parties