Loans Receivable - Additional Information (Details) - USD ($)		3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Dec. 31, 2019	May 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable outstanding principal balance	$ 460,600,000	$ 460,600,000		$ 460,600,000			$ 425,900,000
Inception-to-date interest income paid-in-kind	200,600,000	200,600,000		200,600,000			154,700,000
Downward measurement period adjustment to PCI loans		26,100,000
Business combination, acquired receivables, gross contractual amount							772,200,000
Certain loans acquired in transfer not accounted for as debt securities, acquired during period, cash flows expected to be collected at acquisition							235,600,000
Allowance for loan losses	2,914,000	2,914,000		2,914,000		$ 7,900,000	0
Charge-offs and other, net		0		0
(Recapture of) provision for loan losses		(4,986,000)	$ 0	2,914,000	$ 0
Loan amount	0	0		0			67,153,000
Increase (decrease) to equity for promissory note conversion, resulting in change in ownership		70,565,000		70,565,000
Decrease to financing receivable from affiliates for promissory note conversion				70,565,000	$ 0
Noncontrolling Interests
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) to equity for promissory note conversion, resulting in change in ownership	26,300,000	26,291,000		26,291,000
Additional Paid-in Capital
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) to equity for promissory note conversion, resulting in change in ownership	44,300,000	44,274,000		44,274,000
PCI loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable outstanding principal balance	319,607,000	319,607,000		319,607,000			296,627,000
Allowance for loan losses	2,300,000	2,300,000		2,300,000
Charge-offs and other, net		0		0
(Recapture of) provision for loan losses		(5,000,000.0)		2,300,000
LiquidTrust borrowers | Affiliated Entity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan amount	$ 70,600,000	$ 70,600,000		$ 70,600,000				$ 65,000,000.0
Loan interest rate	7.00%	7.00%		7.00%
Interest receivable							2,200,000
Allowance for loan losses							$ 0
Decrease to financing receivable from affiliates for promissory note conversion	$ 70,600,000
LiquidTrust borrowers | Affiliated Entity | Beneficient Company Holdings Preferred C Investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Conversion of note receivable to capital	75,000,000.0
Conversion of note receivable, additional potential capital interests	$ 5,000,000.0	$ 5,000,000.0		$ 5,000,000.0