| Line Item | Jun 30, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Dec 31, 2022 | Sep 30, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Net Interest Income: | |||||||||||||||
| Interest income | |||||||||||||||
| Interest expense | |||||||||||||||
| Net interest income | |||||||||||||||
| Increase in provision for credit losses | |||||||||||||||
| Other income (losses): | |||||||||||||||
| Net unrealized gains (losses) on derivatives | |||||||||||||||
| Realized gains (losses) on derivatives | |||||||||||||||
| Periodic interest on derivatives, net | |||||||||||||||
| Net gains (losses) on derivatives | |||||||||||||||
| Investment management and advisory fees | |||||||||||||||
| Interest income from investment in MSR financing receivables | |||||||||||||||
| Net unrealized gains (losses) on financial instruments at fair value | |||||||||||||||
| Net realized gains (losses) on sales of investments | |||||||||||||||
| Gains (losses) on extinguishment of debt | |||||||||||||||
| Other investment gains (losses) | |||||||||||||||
| Gain on origination and sale of loans, net | — | — | |||||||||||||
| Total other income (losses) | |||||||||||||||
| Other expenses: | |||||||||||||||
| Compensation and benefits | |||||||||||||||
| General and administrative expenses | |||||||||||||||
| Servicing and asset manager fees | |||||||||||||||
| Depreciation, amortization, and impairment of intangible assets | — | — | |||||||||||||
| Transaction expenses | |||||||||||||||
| Total other expenses | |||||||||||||||
| Income (loss) before income taxes | |||||||||||||||
| Income tax (benefit) expense | |||||||||||||||
| Net income (loss) | |||||||||||||||
| Dividends on preferred stock | |||||||||||||||
| Net income (loss) available to common shareholders | |||||||||||||||
| Net income (loss) per share available to common shareholders: | |||||||||||||||
| Basic (in dollars per share) | |||||||||||||||
| Diluted (in dollars per share) |