TRANSACTIONS WITH RELATED PARTIES (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Related Party Transaction [Line Items]
Related party receivables	$ 32,987,000		$ 32,987,000		$ 34,181,000
Total revenue from fees, net	242,594,000	$ 185,685,000	479,598,000	$ 360,939,000
Variable Interest Entity, Not Primary Beneficiary
Related Party Transaction [Line Items]
Loan principal purchased	14,500,000	0	19,500,000	0
Loss on loans purchased	13,400,000		18,400,000
Related Party
Related Party Transaction [Line Items]
Related party receivables	32,987,000		32,987,000		33,739,000
Total revenue from fees, net	175,333,000	148,198,000	353,844,000	301,991,000
Related Party | Securitization Vehicles
Related Party Transaction [Line Items]
Related party receivables	80,400,000		80,400,000		78,400,000
Total revenue from fees, net	157,200,000	137,800,000	319,800,000	269,400,000
Related Party | Other Financing Vehicles
Related Party Transaction [Line Items]
Related party receivables	8,100,000		8,100,000		6,300,000
Total revenue from fees, net	18,100,000	$ 10,400,000	34,000,000	$ 32,500,000
Related Party | Assets
Related Party Transaction [Line Items]
Related party receivables	88,500,000		88,500,000		84,800,000
Related Party | Prepaid Expense And Other Assets, Noncurrent
Related Party Transaction [Line Items]
Related party receivables	$ 6,400,000		$ 6,400,000		$ 7,900,000