SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Contracts with Customers and Asset Management Fees (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Contracts with Customers
Revenue from contracts with customer	$ 64,390	$ 61,621	$ 185,220	$ 191,259
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	Revenues	Revenues	Revenues	Revenues
Loan origination and debt brokerage fees, net
Contracts with Customers
Revenue from contracts with customer	$ 21,310	$ 16,259	$ 64,718	$ 50,982
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	Revenues	Revenues	Revenues	Revenues
Property sales broker fees
Contracts with Customers
Revenue from contracts with customer	$ 19,322	$ 16,862	$ 39,408	$ 38,831
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	Revenues	Revenues	Revenues	Revenues
Investment management fees
Contracts with Customers
Revenue from contracts with customer	$ 11,744	$ 13,362	$ 40,086	$ 44,844
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	Revenues	Revenues	Revenues	Revenues
Application fees, appraisal revenues, subscription revenues, syndication fees, and other revenues
Contracts with Customers
Revenue from contracts with customer	$ 12,014	$ 15,138	$ 41,008	$ 56,602
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	Revenues	Revenues	Revenues	Revenues