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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Mar. 31, 2022 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2022
Income Tax Contingency [Line Items] |  |  |  |  |  |
Non cash deferred tax benefit due to revocation of REIT status |  |  | $ 161.3 |  |  |
Deferred income tax benefit | $ 3.2 | $ 5.8 |  | $ 14.5 | $ 35.7 |
Valuation allowance | $ 242.4 |  |  | $ 242.4 |  |
U.S. statutory rate |  |  |  | 21.00% |  |
Effective federal tax rate |  |  |  | 0.00% |  |
Deferred tax assets valuation allowance |  |  |  | $ 242.4 |  |
Minimum [Member] |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Distribution of taxable income to qualify as REIT, percent |  |  |  | 90.00% |  | 90.00%

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