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Overview of the Business (Details) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |
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Nov. 21, 2024 USD ($) | Nov. 12, 2024 USD ($) | Aug. 06, 2024 USD ($) $ / shares shares | Oct. 19, 2023 USD ($) | Jun. 27, 2023 USD ($) | Dec. 07, 2021 $ / shares | Dec. 06, 2021 $ / shares | Nov. 14, 2025 USD ($) | Sep. 30, 2025 USD ($) subsidiary | Jun. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) subsidiary | Sep. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Nov. 10, 2025 USD ($) | Oct. 31, 2025 USD ($) | Apr. 14, 2025 USD ($) | Mar. 31, 2025 USD ($) | Nov. 13, 2024 USD ($) shares | Aug. 16, 2024 USD ($) | Aug. 14, 2024 shares | Jun. 20, 2024 USD ($) | Jun. 07, 2023 shares | Jun. 06, 2023
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Charitable contribution percentage |  |  |  |  |  |  |  |  | 0.025 |  |  | 0.025 |  |  |  |  |  |  |  |  |  |  |  |
Portion allocated to noncontrolling interest holders (in dollars per share) | $ / shares |  |  |  |  |  | $ 0.025 | $ 0.05 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Portion allocated to lender (in dollars per share) | $ / shares |  |  |  |  |  | $ 1.00 | $ 0.95 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance services, number of subsidiaries | subsidiary |  |  |  |  |  |  |  |  | 2 |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  |  |  |  | $ 4,902 |  |  | $ 4,902 |  |  |  |  |  | $ 1,346 |  |  |  |  |  |
Accumulated deficit |  |  |  |  |  |  |  |  | 2,076,757 |  |  | 2,076,757 |  |  |  |  |  | 2,008,052 |  |  |  |  |  |
Debt due to related parties |  |  |  |  |  |  |  |  | 103,960 |  |  | 103,960 |  |  |  |  |  | 117,896 |  |  |  |  |  |
Accrual (release) of loss contingency related to arbitration award |  |  |  |  |  |  |  |  | 0 |  | $ 0 | $ 62,831 | $ (54,973) | $ 55,000 |  |  |  |  |  |  |  |  |  |
Loss contingency, quarterly interest accrual |  |  |  |  |  |  |  |  |  |  |  | 10.50% |  |  |  |  |  |  |  |  |  |  |  |
Standby equity purchase agreement, sale of stock, percentage of issuance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 19.90% |  |
Securities exercisable (in shares) | shares |  |  | 1,325,382 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclass of BCH Preferred A-0 from temporary to permanent equity |  |  |  |  |  |  |  |  |  |  | $ 125,526 |  | 125,526 |  |  |  |  |  |  |  |  |  |  |
Class A common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities exercisable (in shares) | shares |  |  | 1,325,382 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 662,691 |  | 662,691 |  |  |
Warrant exercise price (in dollars per share) | $ / shares |  |  | $ 2.63 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A common stock, par value $0.001 per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities exercisable (in shares) | shares |  |  | 662,691 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities exercisable (in shares) | shares |  |  | 1,325,382 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion amount |  |  | $ 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt due to related parties |  |  |  |  |  |  |  |  | 126,000 |  |  | $ 126,000 |  |  |  |  |  |  |  |  |  |  |  |
Related Party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, principal and accrued interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 94,400 |  |  |  |  |  |  |
HH-BDH | Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt term |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term loan |  |  |  | $ 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,700 |  |  |  |
HH-BDH | Related Party | Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt term |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term loan |  |  |  | $ 25,000 |  |  |  |  | 850 |  |  | 850 |  |  |  |  |  |  |  | $ 1,700 |  |  |  |
HH-BDH | Beneficent Capital Company | Related Party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt due to related parties, gross |  |  |  |  |  |  |  |  | 7,824 |  |  | 7,824 |  |  |  |  |  | $ 22,000 |  |  |  |  |  |
First and Second Lien Credit Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, increase, accrued interest |  |  |  |  |  |  |  |  |  | $ 18,600 |  | 24,000 |  |  |  |  |  |  |  |  |  |  |  |
Standby Equity Purchase Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Standby equity purchase agreement, sale of stock |  | $ 200,100 |  |  | $ 250,000 |  |  |  |  |  |  | 300 | $ 3,900 |  |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement | Convertible debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  | 4,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion amount |  |  | $ 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
First Closing | Convertible debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional agree principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000 |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9,000 |  |  |  |  |  |  |  |
Subsequent Event | HH-BDH | Beneficent Capital Company | Related Party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt due to related parties, gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,800 |  |  |  |  |  |  |  |  |
Repayments of short-term debt |  |  |  |  |  |  |  | $ 7,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock value issuable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 246,100 |  |
Amount available under the terms of SEPA |  |  |  |  |  |  |  |  | $ 240,700 |  |  | $ 240,700 |  |  |  |  |  |  |  |  |  |  |  |
Securities exercisable (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |
Preferred Series A Subclass 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption of preferred stock, maximum percentage of capital account balance non redeemable |  |  |  |  |  |  |  |  |  |  | 50.00% |  | 50.00% |  |  |  |  |  |  |  |  |  |  |
Maximum percentage redeemable |  |  |  |  |  |  |  |  | 50.00% |  | 50.00% | 50.00% | 50.00% |  |  |  |  |  |  |  |  |  |  |
Reclass of BCH Preferred A-0 from temporary to permanent equity |  |  |  |  |  |  |  |  |  |  |  |  | $ 125,500 |  |  |  |  |  |  |  |  |  |  |
BCH Preferred Series A-0 Non-Redeemable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclass of BCH Preferred A-0 from temporary to permanent equity | $ 35,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BCH | Subclass 1 Class A Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1

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