Segment Reporting - Segment Reconciliations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenue	$ 33,786	$ 68,012	$ 37,259	$ 119,742
Interest expense	45,096	40,792	128,605	113,805
Total Segment EBT	(47,432)	(20,530)	(191,103)	(156,686)
Income tax expense (benefit)	655	3,618	173	(14,545)
Net loss	(48,087)	(24,148)	(191,276)	(142,141)
Assets	3,490,196		3,490,196		$ 3,564,957
Operating Segments | Secondary Life Insurance
Segment Reporting Information [Line Items]
Revenue	15,856	14,422	18,955	44,800
Interest expense	37,635	24,983	95,713	72,022
Total Segment EBT	(28,142)	(12,147)	(86,730)	(39,314)
Assets	857,166		857,166		886,739
Operating Segments | Beneficient
Segment Reporting Information [Line Items]
Revenue	17,867	53,589	18,235	74,925
Interest expense	7,461	15,809	32,892	41,783
Total Segment EBT	(6,576)	532	(67,450)	(94,880)
Assets	2,627,976		2,627,976		2,662,630
Corporate & Other
Segment Reporting Information [Line Items]
Revenue	63	1	69	17
Total Segment EBT	(12,714)	$ (8,915)	(36,923)	$ (22,492)
Assets	$ 5,054		$ 5,054		$ 15,588