EXPENSES, CHANGE IN FAIR VALUE OF INVESTMENTS AND OTHER - Schedule of Gain (Loss) on Settlement of Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Gain on Settlement of Investments, Net
Gain (loss) on sale of real estate securities	$ (1,021,850)	$ (63,809)	$ (1,141,486)	$ (89,500)
Sale of acquired residential mortgage loans	6,592	66,807	55,213	116,404
Settlement of derivatives	12,722	(73,978)	292,667	(152,913)
Liquidated residential mortgage loans	677	(6,497)	(43,806)	(5,868)
Sale of REO	(780)	371	(4,138)	(3,814)
Extinguishment of debt	0	0	0	83
Other	(1,815)	(21,211)	(6,784)	(53,311)
Total gain (loss) on settlement of investments, net	$ (1,004,454)	$ (98,317)	$ (848,334)	$ (188,919)