Note 6 - Fair Value Measurement (Tables)
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9 Months Ended |
Sep. 30, 2026 |
| Notes Tables |
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| Fair Value, by Balance Sheet Grouping [Table Text Block] |
| | As of September 30, 2026 | |
| | Level 1 | | | Level 2 | | | Level 3 | | | Total | |
Assets, at fair value | | | | | | | | | | | | | | | | |
Residential mortgage loans, at fair value | | $ | — | | | $ | — | | | $ | 84,484,411 | | | $ | 84,484,411 | |
Mortgage servicing rights investments, at fair value | | | — | | | | — | | | | 6,806,924 | | | | 6,806,924 | |
Other assets, at fair value (1) | | | 2,968,714 | | | | — | | | | — | | | | 2,968,714 | |
Total assets, at fair value | | $ | 2,968,714 | | | $ | — | | | $ | 91,291,335 | | | $ | 94,260,049 | |
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| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] |
| | Nine Months Ended September 30, 2026 | |
| | Residential | | | Mortgage | | | | | |
| | Mortgage | | | Servicing Rights | | | | | |
| | Loans | | | Investments | | | Total | |
Fair value balance as of January 1, 2026 | | $ | — | | | $ | — | | | $ | — | |
Additions | | | 90,698,731 | | | | 9,223,645 | | | | 99,922,376 | |
Principal repayment | | | (816,761 | ) | | | — | | | | (816,761 | ) |
Discount amortization, net | | | 162,808 | | | | — | | | | 162,808 | |
Disposals | | | (1,400,991 | ) | | | — | | | | (1,400,991 | ) |
Distributions | | | — | | | | (3,500,000 | ) | | | (3,500,000 | ) |
Net change in fair value | | | (4,159,376 | ) | | | 1,083,279 | | | | (3,076,097 | ) |
Fair value balance as of September 30, 2026 | | $ | 84,484,411 | | | $ | 6,806,924 | | | $ | 91,291,335 | |
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| Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] |
As of September 30, 2026 |
| | | | Principal | | | | | | | |
| Fair | | Valuation | Unobservable | | | | | | |
Investment | Value | | Technique | Inputs | Range | | Average | |
Residential mortgage loans, at fair value | $ | 84,484,411 | | DCF | Discount Rate | | 7.50% - 8.50% | | | 8.00 | % |
| | | | | Expected Life (years) | 4.4 - 6.4 years | | 5.4 years | |
Mortgage servicing rights investments, at fair value | | 6,806,924 | | DCF | Discount Rate | | 4.28% - 29.80% | | | 5.00 | % |
| | | | | Expected Life (years) | 2.7 - 9.7 years | | 8.8 years | |
| | | | | Prepayment rate (CPR) | | 9.01% - 11.00% | | | 9.02 | % |
| | | | | Default Rate (CDR) | | 0.15% - 0.37% | | | 0.17 | % |
Total | $ | 91,291,335 | | | | | | | | | |
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