OTHER ASSETS AND LIABILITIES, GENERAL AND ADMINISTRATIVE, AND OTHER ITEMS - Schedule of Other Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other income (loss), net
Unrealized gain (loss) on secured notes and bonds payable	$ 5,638	$ (10,856)	$ 1,216	$ 6,146
Unrealized gain (loss) on contingent consideration	0	(2,257)	(408)	(3,871)
Unrealized gain (loss) on equity investments	(1,834)	(2,674)	(4,617)	(47,697)
Gain (loss) on transfer of loans to REO	2,790	1,712	4,111	4,307
Gain (loss) on transfer of loans to other assets	44	(20)	23	(261)
Gain (loss) on Ocwen common stock	1,725	929	1,539	(4,121)
Provision for servicing losses	(16,643)	(11,249)	(22,801)	(16,030)
Rental and ancillary revenue	14,195	4,801	20,022	11,061
Property and maintenance revenue	25,104	15,311	45,010	28,658
Other income (loss)	(976)	(2,356)	(23,665)	(21,641)
Total other income (loss), net	$ 30,043	$ (6,659)	$ 20,430	$ (43,449)