CASH AND CASH EQUIVALENTS AND RESTRICTED CASH - Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Restricted Cash and Cash Equivalent Item [Line Items]
Total Restricted Cash	$ 549,936	$ 459,066
Operating Segments | Investment Portfolio
Restricted Cash and Cash Equivalent Item [Line Items]
Total Restricted Cash	51,753	66,419
Operating Segments | Origination and Servicing
Restricted Cash and Cash Equivalent Item [Line Items]
Total Restricted Cash	179,882	207,724
Operating Segments | Residential Transitional Lending
Restricted Cash and Cash Equivalent Item [Line Items]
Total Restricted Cash	29,329	40,727
Operating Segments | Asset management
Restricted Cash and Cash Equivalent Item [Line Items]
Total Restricted Cash	55,602	144,196
Operating Segments | Corporate Category
Restricted Cash and Cash Equivalent Item [Line Items]
Total Restricted Cash	$ 233,370	$ 0