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Strategic Transactions with GWG Holdings, Inc. and GWG Life, LLC (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 01, 2021 | Nov. 26, 2021 | Sep. 30, 2020 | Jun. 30, 2023 | Jun. 30, 2022 | Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2023 | Dec. 31, 2021 | Dec. 31, 2020 | Jun. 06, 2023 | Jun. 05, 2023 | Nov. 29, 2021 | Nov. 23, 2021 | Aug. 11, 2020 | May 31, 2019 | Dec. 28, 2018
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  | $ 0 |  | $ 0 |  | $ 34,013 | $ 0 |  |  |  |  |  |  |
Cash contribution for BCH Preferred Series C Unit Accounts |  |  |  |  |  |  | $ 14,800 |  |  | 14,800 | 130,200 |  |  |  |  |  |  |
Preferred units redeemed for cash |  |  |  |  |  |  |  |  |  | 14,800 |  |  |  |  |  |  |  |
Gain (loss) on investments |  |  |  | $ 500 | $ (25,117) | $ (10,811) | $ 2,091 | (54,010) |  | 15,534 | 132,620 |  |  |  |  |  |  |
Preferred units issued, value |  |  |  | $ 0 |  |  |  | $ 0 | [1] |  |  |  |  |  |  |  |  |
Net increase to noncontrolling interest |  |  | $ 3,200 |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |
LiquidTrust Borrowers | Affiliated Entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Promissory note |  |  | 65,100 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 65,000 |
Collateral Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in public equity securities |  |  | 84,600 |  |  |  |  |  |  |  | 84,600 |  |  |  |  |  |  |
Increase in debt securities |  |  | 94,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on investments |  |  | 88,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BCG Common Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment received |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 57,500 |  |
Price per unit (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12.5 |  |
BCG Common Units | Collateral Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury shares, value |  |  | 3,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
L Bonds | Collateral Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount exchanged |  |  | 94,800 |  |  |  |  |  |  |  | 94,800 |  |  |  |  |  |  |
Customer ExAlt Trusts | Collateral Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of investment |  |  | $ 94,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Loan Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of outstanding principal |  | $ 202,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Loan Agreement | Loans Payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  | 192,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 192,500
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00%
Interest rate payable monthly in cash |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.50%
Interest rate accrued and compounded annually |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.50%
Accrued interest |  | 5,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  |  |  |  | 14,600 |  |  |  |  |  |  |  |
Unamortized debt discount |  | 15,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of loan agreement |  | $ 207,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Series A Subclass 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate capital accounts, converted |  |  |  |  |  |  |  |  |  |  |  | $ 193,900 |  | $ 319,000 |  |  |  |
Preferred Series C |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash contribution for BCH Preferred Series C Unit Accounts |  |  |  |  |  |  |  |  |  | $ 14,800 | $ 130,200 |  |  |  |  |  |  |
Class A common stock, par value $0.001 per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Units issued (in shares) |  | 19,250,795 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Price per unit (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  | $ 10.588 |  |  |  |  |
Class A common stock, par value $0.001 per share | BCG Common Units | Collateral Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares exchanged (in shares) |  |  | 543,874 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of shares exchanged |  |  | $ 6,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A common stock, par value $0.001 per share | GWG Holdings | Collateral Swap |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares exchanged (in shares) |  |  | 9,837,264 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of shares exchanged |  |  | $ 84,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Series C Subclass 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred units issued, value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 75,000 |
Preferred stock, fair value |  |  | $ 71,200 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Series C Subclass 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate capital accounts, converted |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14,800 |  |  |
Preferred units redeemed for cash | $ 14,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Retroactively adjusted March 31, 2023 for the de-SPAC merger transaction as described in Note 4. Such adjustments are unaudited.

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