Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2025 |
Sep. 30, 2024 |
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| Income Tax Disclosure [Abstract] | ||
| U.S. Federal income tax rate | 21.00% | |
| Minimum percentage of tax positions | 50.00% | |
| Liability for unrecognized tax amount | $ 0 | $ 0 |
| Reserves for uncertain tax positions related to federal taxes | 0 | 0 |
| Reserves for uncertain tax positions related to state and local taxes | $ 0 | $ 0 |
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- Definition Minimum percentage of tax positions. No definition available.
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- Definition Amount of deferred tax liability not recognized because of the exceptions to comprehensive recognition of deferred taxes related to a policyholders' surplus. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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