EXPENSES, CHANGE IN FAIR VALUE OF INVESTMENTS AND OTHER - Schedule of Other Income (Loss), Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Other income (loss), net
Unrealized gain (loss) on secured notes and bonds payable	$ 27,957	$ 5,638	$ 35,151	$ 1,216
Rental revenue	12,272	14,195	20,402	20,022
Property and maintenance revenue	32,035	25,104	66,340	45,010
(Provision) reversal for credit losses on securities	(2,174)	1,756	(2,885)	2,650
Valuation and credit loss (provision) reversal on loans and real estate owned	(1,614)	32,652	(4,643)	51,365
Other income (loss)	(9,088)	(14,893)	(2,645)	(45,817)
Total other income (loss), net	$ 59,388	$ 64,452	$ 111,720	$ 74,446