WAREHOUSE AND OTHER LINES OF CREDIT - Additional Information (Details) $ in Thousands		9 Months Ended
	Oct. 30, 2021	Sep. 30, 2022 USD ($) lineOfCredit	Dec. 31, 2021 USD ($)	Oct. 31, 2021 USD ($)	Apr. 30, 2021 USD ($)	Feb. 28, 2021 USD ($)	Dec. 31, 2020 USD ($)	Oct. 31, 2020 USD ($)
Line of Credit Facility [Line Items]
Number of lines of credit held | lineOfCredit		10
Restricted cash		$ 160,926	$ 201,025
Warehouse Agreement Borrowings
Line of Credit Facility [Line Items]
Restricted cash		$ 5,500	$ 8,000
Warehouse Agreement Borrowings | Minimum
Line of Credit Facility [Line Items]
Debt instrument, term		1 year
Warehouse Agreement Borrowings | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)		2.25%
Debt instrument, term		2 years
Warehouse Agreement Borrowings | Base Rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)		1.37%
Warehouse and Revolving Credit Facilities
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 5,700,000
Securitization Facilities
Line of Credit Facility [Line Items]
Debt instrument, term		3 years
Number of securitization facilities | lineOfCredit		1
Securitization Facilities | 2020-1 Securitization Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity								$ 600,000
Securitization Facilities | 2020-2 Securitization Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity							$ 500,000
Securitization Facilities | 2021-1 Securitization Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 500,000
Securitization Facilities | 2021-2 Securitization Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity					$ 500,000
Securitization Facilities | 2021-3 Securitization Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 500,000
Debt instrument, term	3 years